Home / 717,427.29-990,029.38-390,732.90

Finding the Fourth Proportional to 717,427.29, 990,029.38 and 390,732.90

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Solution

The fourth proportional to 717,427.29, 990,029.38 and 390,732.90 is: 539,200.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,427.29 : 990,029.38 = 390,732.90 : x
  2. Step 2: Convert to fraction form
    717,427.29/990,029.38 = 390,732.90/x
  3. Step 3: Cross multiply
    717,427.29x = 990,029.38 × 390,732.90
  4. Step 4: Simplify right side
    717,427.29x = 386,837,050,732.60
  5. Step 5: Solve for x
    x = 386,837,050,732.60/717,427.29
  6. Step 6: Final answer
    x = 539,200.36

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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.