Home / 440,124,427.20-660,186,640.80-210,541,915.20

Finding the Fourth Proportional to 440,124,427.20, 660,186,640.80 and 210,541,915.20

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Solution

The fourth proportional to 440,124,427.20, 660,186,640.80 and 210,541,915.20 is: 315,812,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,124,427.20 : 660,186,640.80 = 210,541,915.20 : x
  2. Step 2: Convert to fraction form
    440,124,427.20/660,186,640.80 = 210,541,915.20/x
  3. Step 3: Cross multiply
    440,124,427.20x = 660,186,640.80 × 210,541,915.20
  4. Step 4: Simplify right side
    440,124,427.20x = 138,996,959,743,486,448
  5. Step 5: Solve for x
    x = 138,996,959,743,486,448/440,124,427.20
  6. Step 6: Final answer
    x = 315,812,872.80

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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.