Home / 787,420.71-1,181,652.17-432,681.75

Finding the Fourth Proportional to 787,420.71, 1,181,652.17 and 432,681.75

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Solution

The fourth proportional to 787,420.71, 1,181,652.17 and 432,681.75 is: 649,308.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,420.71 : 1,181,652.17 = 432,681.75 : x
  2. Step 2: Convert to fraction form
    787,420.71/1,181,652.17 = 432,681.75/x
  3. Step 3: Cross multiply
    787,420.71x = 1,181,652.17 × 432,681.75
  4. Step 4: Simplify right side
    787,420.71x = 511,279,326,643.49
  5. Step 5: Solve for x
    x = 511,279,326,643.49/787,420.71
  6. Step 6: Final answer
    x = 649,308.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.