Home / 440,649,640.80-660,974,461.20-389,631,304.80

Finding the Fourth Proportional to 440,649,640.80, 660,974,461.20 and 389,631,304.80

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Solution

The fourth proportional to 440,649,640.80, 660,974,461.20 and 389,631,304.80 is: 584,446,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,649,640.80 : 660,974,461.20 = 389,631,304.80 : x
  2. Step 2: Convert to fraction form
    440,649,640.80/660,974,461.20 = 389,631,304.80/x
  3. Step 3: Cross multiply
    440,649,640.80x = 660,974,461.20 × 389,631,304.80
  4. Step 4: Simplify right side
    440,649,640.80x = 257,536,341,756,832,992
  5. Step 5: Solve for x
    x = 257,536,341,756,832,992/440,649,640.80
  6. Step 6: Final answer
    x = 584,446,957.20

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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.