Home / 931,036.20-1,396,554.30-458,644.20

Finding the Fourth Proportional to 931,036.20, 1,396,554.30 and 458,644.20

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Solution

The fourth proportional to 931,036.20, 1,396,554.30 and 458,644.20 is: 687,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,036.20 : 1,396,554.30 = 458,644.20 : x
  2. Step 2: Convert to fraction form
    931,036.20/1,396,554.30 = 458,644.20/x
  3. Step 3: Cross multiply
    931,036.20x = 1,396,554.30 × 458,644.20
  4. Step 4: Simplify right side
    931,036.20x = 640,521,529,680.06
  5. Step 5: Solve for x
    x = 640,521,529,680.06/931,036.20
  6. Step 6: Final answer
    x = 687,966.30

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Double scale
Find fourth proportional to 931,037.20, 1,396,555.80 and 458,645.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.