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Finding the Fourth Proportional to 616,225.20, 849,935.88 and 389,652

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Solution

The fourth proportional to 616,225.20, 849,935.88 and 389,652 is: 537,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,225.20 : 849,935.88 = 389,652 : x
  2. Step 2: Convert to fraction form
    616,225.20/849,935.88 = 389,652/x
  3. Step 3: Cross multiply
    616,225.20x = 849,935.88 × 389,652
  4. Step 4: Simplify right side
    616,225.20x = 331,179,215,513.76
  5. Step 5: Solve for x
    x = 331,179,215,513.76/616,225.20
  6. Step 6: Final answer
    x = 537,432.12

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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.