Home / 716,962.59-989,420.96-390,285.00

Finding the Fourth Proportional to 716,962.59, 989,420.96 and 390,285.00

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Solution

The fourth proportional to 716,962.59, 989,420.96 and 390,285.00 is: 538,600.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,962.59 : 989,420.96 = 390,285.00 : x
  2. Step 2: Convert to fraction form
    716,962.59/989,420.96 = 390,285.00/x
  3. Step 3: Cross multiply
    716,962.59x = 989,420.96 × 390,285.00
  4. Step 4: Simplify right side
    716,962.59x = 386,156,155,402.21
  5. Step 5: Solve for x
    x = 386,156,155,402.21/716,962.59
  6. Step 6: Final answer
    x = 538,600.14

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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.