Home / 732,019.71-1,098,218.87-428,670.05

Finding the Fourth Proportional to 732,019.71, 1,098,218.87 and 428,670.05

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Solution

The fourth proportional to 732,019.71, 1,098,218.87 and 428,670.05 is: 643,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    732,019.71 : 1,098,218.87 = 428,670.05 : x
  2. Step 2: Convert to fraction form
    732,019.71/1,098,218.87 = 428,670.05/x
  3. Step 3: Cross multiply
    732,019.71x = 1,098,218.87 × 428,670.05
  4. Step 4: Simplify right side
    732,019.71x = 470,773,536,005.23
  5. Step 5: Solve for x
    x = 470,773,536,005.23/732,019.71
  6. Step 6: Final answer
    x = 643,115.93

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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.