Home / 425,898,066.80-638,847,100.20-280,495,809.20

Finding the Fourth Proportional to 425,898,066.80, 638,847,100.20 and 280,495,809.20

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Solution

The fourth proportional to 425,898,066.80, 638,847,100.20 and 280,495,809.20 is: 420,743,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,898,066.80 : 638,847,100.20 = 280,495,809.20 : x
  2. Step 2: Convert to fraction form
    425,898,066.80/638,847,100.20 = 280,495,809.20/x
  3. Step 3: Cross multiply
    425,898,066.80x = 638,847,100.20 × 280,495,809.20
  4. Step 4: Simplify right side
    425,898,066.80x = 179,193,934,325,672,480
  5. Step 5: Solve for x
    x = 179,193,934,325,672,480/425,898,066.80
  6. Step 6: Final answer
    x = 420,743,713.80

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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.