Home / 819,072,001.20-1,228,608,001.80-528,834,356.40

Finding the Fourth Proportional to 819,072,001.20, 1,228,608,001.80 and 528,834,356.40

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Solution

The fourth proportional to 819,072,001.20, 1,228,608,001.80 and 528,834,356.40 is: 793,251,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,072,001.20 : 1,228,608,001.80 = 528,834,356.40 : x
  2. Step 2: Convert to fraction form
    819,072,001.20/1,228,608,001.80 = 528,834,356.40/x
  3. Step 3: Cross multiply
    819,072,001.20x = 1,228,608,001.80 × 528,834,356.40
  4. Step 4: Simplify right side
    819,072,001.20x = 649,730,121,899,793,024
  5. Step 5: Solve for x
    x = 649,730,121,899,793,024/819,072,001.20
  6. Step 6: Final answer
    x = 793,251,534.60

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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.