Home / 386,834,152.80-580,251,229.20-193,123,908.30

Finding the Fourth Proportional to 386,834,152.80, 580,251,229.20 and 193,123,908.30

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Solution

The fourth proportional to 386,834,152.80, 580,251,229.20 and 193,123,908.30 is: 289,685,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,834,152.80 : 580,251,229.20 = 193,123,908.30 : x
  2. Step 2: Convert to fraction form
    386,834,152.80/580,251,229.20 = 193,123,908.30/x
  3. Step 3: Cross multiply
    386,834,152.80x = 580,251,229.20 × 193,123,908.30
  4. Step 4: Simplify right side
    386,834,152.80x = 112,060,385,178,983,104
  5. Step 5: Solve for x
    x = 112,060,385,178,983,104/386,834,152.80
  6. Step 6: Final answer
    x = 289,685,862.45

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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.