Home / 1,150,565,396.68-1,587,779,562.28-621,929,389.80

Finding the Fourth Proportional to 1,150,565,396.68, 1,587,779,562.28 and 621,929,389.80

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Solution

The fourth proportional to 1,150,565,396.68, 1,587,779,562.28 and 621,929,389.80 is: 858,262,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150,565,396.68 : 1,587,779,562.28 = 621,929,389.80 : x
  2. Step 2: Convert to fraction form
    1,150,565,396.68/1,587,779,562.28 = 621,929,389.80/x
  3. Step 3: Cross multiply
    1,150,565,396.68x = 1,587,779,562.28 × 621,929,389.80
  4. Step 4: Simplify right side
    1,150,565,396.68x = 987,486,774,305,711,360
  5. Step 5: Solve for x
    x = 987,486,774,305,711,360/1,150,565,396.68
  6. Step 6: Final answer
    x = 858,262,187.58

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Half scale
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Double scale
Find fourth proportional to 1,150,565,397.68, 1,587,779,563.66 and 621,929,390.80
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.