Home / 408,579,834.40-612,869,751.60-255,398,855.20

Finding the Fourth Proportional to 408,579,834.40, 612,869,751.60 and 255,398,855.20

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Solution

The fourth proportional to 408,579,834.40, 612,869,751.60 and 255,398,855.20 is: 383,098,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,579,834.40 : 612,869,751.60 = 255,398,855.20 : x
  2. Step 2: Convert to fraction form
    408,579,834.40/612,869,751.60 = 255,398,855.20/x
  3. Step 3: Cross multiply
    408,579,834.40x = 612,869,751.60 × 255,398,855.20
  4. Step 4: Simplify right side
    408,579,834.40x = 156,526,232,945,348,352
  5. Step 5: Solve for x
    x = 156,526,232,945,348,352/408,579,834.40
  6. Step 6: Final answer
    x = 383,098,282.80

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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.