Home / 987,310.60-1,481,657.10-426,747.40

Finding the Fourth Proportional to 987,310.60, 1,481,657.10 and 426,747.40

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Solution

The fourth proportional to 987,310.60, 1,481,657.10 and 426,747.40 is: 640,419.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,310.60 : 1,481,657.10 = 426,747.40 : x
  2. Step 2: Convert to fraction form
    987,310.60/1,481,657.10 = 426,747.40/x
  3. Step 3: Cross multiply
    987,310.60x = 1,481,657.10 × 426,747.40
  4. Step 4: Simplify right side
    987,310.60x = 632,293,315,116.54
  5. Step 5: Solve for x
    x = 632,293,315,116.54/987,310.60
  6. Step 6: Final answer
    x = 640,419.86

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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.