Home / 819,126,023.80-1,228,689,035.70-543,627,009.40

Finding the Fourth Proportional to 819,126,023.80, 1,228,689,035.70 and 543,627,009.40

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Solution

The fourth proportional to 819,126,023.80, 1,228,689,035.70 and 543,627,009.40 is: 815,440,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,126,023.80 : 1,228,689,035.70 = 543,627,009.40 : x
  2. Step 2: Convert to fraction form
    819,126,023.80/1,228,689,035.70 = 543,627,009.40/x
  3. Step 3: Cross multiply
    819,126,023.80x = 1,228,689,035.70 × 543,627,009.40
  4. Step 4: Simplify right side
    819,126,023.80x = 667,948,545,960,160,896
  5. Step 5: Solve for x
    x = 667,948,545,960,160,896/819,126,023.80
  6. Step 6: Final answer
    x = 815,440,514.10

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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.