Home / 987,412.78-1,481,402.89-410,923.86

Finding the Fourth Proportional to 987,412.78, 1,481,402.89 and 410,923.86

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Solution

The fourth proportional to 987,412.78, 1,481,402.89 and 410,923.86 is: 616,503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,412.78 : 1,481,402.89 = 410,923.86 : x
  2. Step 2: Convert to fraction form
    987,412.78/1,481,402.89 = 410,923.86/x
  3. Step 3: Cross multiply
    987,412.78x = 1,481,402.89 × 410,923.86
  4. Step 4: Simplify right side
    987,412.78x = 608,743,793,773.96
  5. Step 5: Solve for x
    x = 608,743,793,773.96/987,412.78
  6. Step 6: Final answer
    x = 616,503.86

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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.