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Finding the Fourth Proportional to 426,596,407.92, 639,894,604.19 and 119,888,520.80

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Solution

The fourth proportional to 426,596,407.92, 639,894,604.19 and 119,888,520.80 is: 179,832,779.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,596,407.92 : 639,894,604.19 = 119,888,520.80 : x
  2. Step 2: Convert to fraction form
    426,596,407.92/639,894,604.19 = 119,888,520.80/x
  3. Step 3: Cross multiply
    426,596,407.92x = 639,894,604.19 × 119,888,520.80
  4. Step 4: Simplify right side
    426,596,407.92x = 76,716,017,560,441,664
  5. Step 5: Solve for x
    x = 76,716,017,560,441,664/426,596,407.92
  6. Step 6: Final answer
    x = 179,832,779.03

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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.