Home / 744,564.70-1,115,615.85-428,470.30

Finding the Fourth Proportional to 744,564.70, 1,115,615.85 and 428,470.30

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Solution

The fourth proportional to 744,564.70, 1,115,615.85 and 428,470.30 is: 641,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,564.70 : 1,115,615.85 = 428,470.30 : x
  2. Step 2: Convert to fraction form
    744,564.70/1,115,615.85 = 428,470.30/x
  3. Step 3: Cross multiply
    744,564.70x = 1,115,615.85 × 428,470.30
  4. Step 4: Simplify right side
    744,564.70x = 478,008,257,934.26
  5. Step 5: Solve for x
    x = 478,008,257,934.26/744,564.70
  6. Step 6: Final answer
    x = 641,996.94

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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.