Home / 819,072,001.80-1,228,608,002.70-543,572,987.40

Finding the Fourth Proportional to 819,072,001.80, 1,228,608,002.70 and 543,572,987.40

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Solution

The fourth proportional to 819,072,001.80, 1,228,608,002.70 and 543,572,987.40 is: 815,359,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,072,001.80 : 1,228,608,002.70 = 543,572,987.40 : x
  2. Step 2: Convert to fraction form
    819,072,001.80/1,228,608,002.70 = 543,572,987.40/x
  3. Step 3: Cross multiply
    819,072,001.80x = 1,228,608,002.70 × 543,572,987.40
  4. Step 4: Simplify right side
    819,072,001.80x = 667,838,122,371,186,304
  5. Step 5: Solve for x
    x = 667,838,122,371,186,304/819,072,001.80
  6. Step 6: Final answer
    x = 815,359,481.10

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Double scale
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Similar ratio
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1.5x scale

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.