Home / 782,387,862.40-1,174,337,620.80-476,277,846.40

Finding the Fourth Proportional to 782,387,862.40, 1,174,337,620.80 and 476,277,846.40

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Solution

The fourth proportional to 782,387,862.40, 1,174,337,620.80 and 476,277,846.40 is: 714,876,878.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,387,862.40 : 1,174,337,620.80 = 476,277,846.40 : x
  2. Step 2: Convert to fraction form
    782,387,862.40/1,174,337,620.80 = 476,277,846.40/x
  3. Step 3: Cross multiply
    782,387,862.40x = 1,174,337,620.80 × 476,277,846.40
  4. Step 4: Simplify right side
    782,387,862.40x = 559,310,992,981,123,776
  5. Step 5: Solve for x
    x = 559,310,992,981,123,776/782,387,862.40
  6. Step 6: Final answer
    x = 714,876,878.67

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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.