Home / 738,145,490.40-1,107,218,235.60-431,279,647.20

Finding the Fourth Proportional to 738,145,490.40, 1,107,218,235.60 and 431,279,647.20

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Solution

The fourth proportional to 738,145,490.40, 1,107,218,235.60 and 431,279,647.20 is: 646,919,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,145,490.40 : 1,107,218,235.60 = 431,279,647.20 : x
  2. Step 2: Convert to fraction form
    738,145,490.40/1,107,218,235.60 = 431,279,647.20/x
  3. Step 3: Cross multiply
    738,145,490.40x = 1,107,218,235.60 × 431,279,647.20
  4. Step 4: Simplify right side
    738,145,490.40x = 477,520,690,022,974,400
  5. Step 5: Solve for x
    x = 477,520,690,022,974,400/738,145,490.40
  6. Step 6: Final answer
    x = 646,919,470.80

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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.