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Finding the Fourth Proportional to 524,939.40, 724,416.18 and 286,475.40

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Solution

The fourth proportional to 524,939.40, 724,416.18 and 286,475.40 is: 395,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,939.40 : 724,416.18 = 286,475.40 : x
  2. Step 2: Convert to fraction form
    524,939.40/724,416.18 = 286,475.40/x
  3. Step 3: Cross multiply
    524,939.40x = 724,416.18 × 286,475.40
  4. Step 4: Simplify right side
    524,939.40x = 207,527,414,931.97
  5. Step 5: Solve for x
    x = 207,527,414,931.97/524,939.40
  6. Step 6: Final answer
    x = 395,335.95

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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.