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Finding the Fourth Proportional to 674,402.61, 930,664.52 and 368,472.39

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Solution

The fourth proportional to 674,402.61, 930,664.52 and 368,472.39 is: 508,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,402.61 : 930,664.52 = 368,472.39 : x
  2. Step 2: Convert to fraction form
    674,402.61/930,664.52 = 368,472.39/x
  3. Step 3: Cross multiply
    674,402.61x = 930,664.52 × 368,472.39
  4. Step 4: Simplify right side
    674,402.61x = 342,924,178,130.24
  5. Step 5: Solve for x
    x = 342,924,178,130.24/674,402.61
  6. Step 6: Final answer
    x = 508,485.84

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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.