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Finding the Fourth Proportional to 542,070.80, 748,037.52 and 312,637.70

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Solution

The fourth proportional to 542,070.80, 748,037.52 and 312,637.70 is: 431,428.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,070.80 : 748,037.52 = 312,637.70 : x
  2. Step 2: Convert to fraction form
    542,070.80/748,037.52 = 312,637.70/x
  3. Step 3: Cross multiply
    542,070.80x = 748,037.52 × 312,637.70
  4. Step 4: Simplify right side
    542,070.80x = 233,864,726,026.32
  5. Step 5: Solve for x
    x = 233,864,726,026.32/542,070.80
  6. Step 6: Final answer
    x = 431,428.38

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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.