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Finding the Fourth Proportional to 474,513.92, 655,564.64 and 397,897.92

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Solution

The fourth proportional to 474,513.92, 655,564.64 and 397,897.92 is: 549,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,513.92 : 655,564.64 = 397,897.92 : x
  2. Step 2: Convert to fraction form
    474,513.92/655,564.64 = 397,897.92/x
  3. Step 3: Cross multiply
    474,513.92x = 655,564.64 × 397,897.92
  4. Step 4: Simplify right side
    474,513.92x = 260,847,806,681.55
  5. Step 5: Solve for x
    x = 260,847,806,681.55/474,513.92
  6. Step 6: Final answer
    x = 549,715.82

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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.