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Finding the Fourth Proportional to 657,145.70, 985,718.55 and 283,168.70

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Solution

The fourth proportional to 657,145.70, 985,718.55 and 283,168.70 is: 424,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,145.70 : 985,718.55 = 283,168.70 : x
  2. Step 2: Convert to fraction form
    657,145.70/985,718.55 = 283,168.70/x
  3. Step 3: Cross multiply
    657,145.70x = 985,718.55 × 283,168.70
  4. Step 4: Simplify right side
    657,145.70x = 279,124,640,369.39
  5. Step 5: Solve for x
    x = 279,124,640,369.39/657,145.70
  6. Step 6: Final answer
    x = 424,753.05

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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.