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Finding the Fourth Proportional to 1,120,404,737.70, 1,680,607,106.55 and 713,265,819.30

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Solution

The fourth proportional to 1,120,404,737.70, 1,680,607,106.55 and 713,265,819.30 is: 1,069,898,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,404,737.70 : 1,680,607,106.55 = 713,265,819.30 : x
  2. Step 2: Convert to fraction form
    1,120,404,737.70/1,680,607,106.55 = 713,265,819.30/x
  3. Step 3: Cross multiply
    1,120,404,737.70x = 1,680,607,106.55 × 713,265,819.30
  4. Step 4: Simplify right side
    1,120,404,737.70x = 1,198,719,604,774,788,096
  5. Step 5: Solve for x
    x = 1,198,719,604,774,788,096/1,120,404,737.70
  6. Step 6: Final answer
    x = 1,069,898,728.95

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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.