Home / 512,448,001.20-768,672,001.80-488,639,444.40

Finding the Fourth Proportional to 512,448,001.20, 768,672,001.80 and 488,639,444.40

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Solution

The fourth proportional to 512,448,001.20, 768,672,001.80 and 488,639,444.40 is: 732,959,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,448,001.20 : 768,672,001.80 = 488,639,444.40 : x
  2. Step 2: Convert to fraction form
    512,448,001.20/768,672,001.80 = 488,639,444.40/x
  3. Step 3: Cross multiply
    512,448,001.20x = 768,672,001.80 × 488,639,444.40
  4. Step 4: Simplify right side
    512,448,001.20x = 375,603,459,885,387,776
  5. Step 5: Solve for x
    x = 375,603,459,885,387,776/512,448,001.20
  6. Step 6: Final answer
    x = 732,959,166.60

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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.