Home / 747,459.20-1,119,957.60-431,364.80

Finding the Fourth Proportional to 747,459.20, 1,119,957.60 and 431,364.80

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Solution

The fourth proportional to 747,459.20, 1,119,957.60 and 431,364.80 is: 646,336.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,459.20 : 1,119,957.60 = 431,364.80 : x
  2. Step 2: Convert to fraction form
    747,459.20/1,119,957.60 = 431,364.80/x
  3. Step 3: Cross multiply
    747,459.20x = 1,119,957.60 × 431,364.80
  4. Step 4: Simplify right side
    747,459.20x = 483,110,286,132.48
  5. Step 5: Solve for x
    x = 483,110,286,132.48/747,459.20
  6. Step 6: Final answer
    x = 646,336.66

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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.