Home / 542,069.30-748,035.45-312,636.20

Finding the Fourth Proportional to 542,069.30, 748,035.45 and 312,636.20

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Solution

The fourth proportional to 542,069.30, 748,035.45 and 312,636.20 is: 431,426.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,069.30 : 748,035.45 = 312,636.20 : x
  2. Step 2: Convert to fraction form
    542,069.30/748,035.45 = 312,636.20/x
  3. Step 3: Cross multiply
    542,069.30x = 748,035.45 × 312,636.20
  4. Step 4: Simplify right side
    542,069.30x = 233,862,956,813.11
  5. Step 5: Solve for x
    x = 233,862,956,813.11/542,069.30
  6. Step 6: Final answer
    x = 431,426.31

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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.