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Finding the Fourth Proportional to 542,799.36, 748,374.72 and 387,935.76

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Solution

The fourth proportional to 542,799.36, 748,374.72 and 387,935.76 is: 534,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,799.36 : 748,374.72 = 387,935.76 : x
  2. Step 2: Convert to fraction form
    542,799.36/748,374.72 = 387,935.76/x
  3. Step 3: Cross multiply
    542,799.36x = 748,374.72 × 387,935.76
  4. Step 4: Simplify right side
    542,799.36x = 290,321,315,767.99
  5. Step 5: Solve for x
    x = 290,321,315,767.99/542,799.36
  6. Step 6: Final answer
    x = 534,859.36

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Double scale
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1.5x scale

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.