Home / 1,150,565,387.65-1,587,779,549.88-621,929,380.78

Finding the Fourth Proportional to 1,150,565,387.65, 1,587,779,549.88 and 621,929,380.78

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Solution

The fourth proportional to 1,150,565,387.65, 1,587,779,549.88 and 621,929,380.78 is: 858,262,175.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150,565,387.65 : 1,587,779,549.88 = 621,929,380.78 : x
  2. Step 2: Convert to fraction form
    1,150,565,387.65/1,587,779,549.88 = 621,929,380.78/x
  3. Step 3: Cross multiply
    1,150,565,387.65x = 1,587,779,549.88 × 621,929,380.78
  4. Step 4: Simplify right side
    1,150,565,387.65x = 987,486,752,272,015,488
  5. Step 5: Solve for x
    x = 987,486,752,272,015,488/1,150,565,387.65
  6. Step 6: Final answer
    x = 858,262,175.16

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Double scale
Find fourth proportional to 1,150,565,388.65, 1,587,779,551.26 and 621,929,381.78
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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.