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Finding the Fourth Proportional to 674,137.77, 930,308.60 and 387,657.88

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Solution

The fourth proportional to 674,137.77, 930,308.60 and 387,657.88 is: 534,967.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,137.77 : 930,308.60 = 387,657.88 : x
  2. Step 2: Convert to fraction form
    674,137.77/930,308.60 = 387,657.88/x
  3. Step 3: Cross multiply
    674,137.77x = 930,308.60 × 387,657.88
  4. Step 4: Simplify right side
    674,137.77x = 360,641,458,265.14
  5. Step 5: Solve for x
    x = 360,641,458,265.14/674,137.77
  6. Step 6: Final answer
    x = 534,967.00

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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.