Home / 688,660.20-1,032,990.30-478,708.20

Finding the Fourth Proportional to 688,660.20, 1,032,990.30 and 478,708.20

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Solution

The fourth proportional to 688,660.20, 1,032,990.30 and 478,708.20 is: 718,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,660.20 : 1,032,990.30 = 478,708.20 : x
  2. Step 2: Convert to fraction form
    688,660.20/1,032,990.30 = 478,708.20/x
  3. Step 3: Cross multiply
    688,660.20x = 1,032,990.30 × 478,708.20
  4. Step 4: Simplify right side
    688,660.20x = 494,500,927,130.46
  5. Step 5: Solve for x
    x = 494,500,927,130.46/688,660.20
  6. Step 6: Final answer
    x = 718,062.30

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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.