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Finding the Fourth Proportional to 487,753.59, 735,286.20 and 455,240.19

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Solution

The fourth proportional to 487,753.59, 735,286.20 and 455,240.19 is: 686,272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,753.59 : 735,286.20 = 455,240.19 : x
  2. Step 2: Convert to fraction form
    487,753.59/735,286.20 = 455,240.19/x
  3. Step 3: Cross multiply
    487,753.59x = 735,286.20 × 455,240.19
  4. Step 4: Simplify right side
    487,753.59x = 334,731,829,392.38
  5. Step 5: Solve for x
    x = 334,731,829,392.38/487,753.59
  6. Step 6: Final answer
    x = 686,272.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.