Home / 747,769.20-1,120,341.60-613,924.80

Finding the Fourth Proportional to 747,769.20, 1,120,341.60 and 613,924.80

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Solution

The fourth proportional to 747,769.20, 1,120,341.60 and 613,924.80 is: 919,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,769.20 : 1,120,341.60 = 613,924.80 : x
  2. Step 2: Convert to fraction form
    747,769.20/1,120,341.60 = 613,924.80/x
  3. Step 3: Cross multiply
    747,769.20x = 1,120,341.60 × 613,924.80
  4. Step 4: Simplify right side
    747,769.20x = 687,805,492,711.68
  5. Step 5: Solve for x
    x = 687,805,492,711.68/747,769.20
  6. Step 6: Final answer
    x = 919,809.87

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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.