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Finding the Fourth Proportional to 542,760.67, 748,519.54 and 338,830.51

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Solution

The fourth proportional to 542,760.67, 748,519.54 and 338,830.51 is: 467,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,760.67 : 748,519.54 = 338,830.51 : x
  2. Step 2: Convert to fraction form
    542,760.67/748,519.54 = 338,830.51/x
  3. Step 3: Cross multiply
    542,760.67x = 748,519.54 × 338,830.51
  4. Step 4: Simplify right side
    542,760.67x = 253,621,257,483.17
  5. Step 5: Solve for x
    x = 253,621,257,483.17/542,760.67
  6. Step 6: Final answer
    x = 467,280.10

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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.