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Finding the Fourth Proportional to 524,935.90, 724,411.35 and 286,471.90

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Solution

The fourth proportional to 524,935.90, 724,411.35 and 286,471.90 is: 395,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,935.90 : 724,411.35 = 286,471.90 : x
  2. Step 2: Convert to fraction form
    524,935.90/724,411.35 = 286,471.90/x
  3. Step 3: Cross multiply
    524,935.90x = 724,411.35 × 286,471.90
  4. Step 4: Simplify right side
    524,935.90x = 207,523,495,816.07
  5. Step 5: Solve for x
    x = 207,523,495,816.07/524,935.90
  6. Step 6: Final answer
    x = 395,331.12

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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.