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Finding the Fourth Proportional to 674,398.50, 930,659.04 and 368,468.34

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Solution

The fourth proportional to 674,398.50, 930,659.04 and 368,468.34 is: 508,480.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,398.50 : 930,659.04 = 368,468.34 : x
  2. Step 2: Convert to fraction form
    674,398.50/930,659.04 = 368,468.34/x
  3. Step 3: Cross multiply
    674,398.50x = 930,659.04 × 368,468.34
  4. Step 4: Simplify right side
    674,398.50x = 342,918,391,574.79
  5. Step 5: Solve for x
    x = 342,918,391,574.79/674,398.50
  6. Step 6: Final answer
    x = 508,480.36

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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.