Home / 686,503,385.10-1,029,707,838.45-220,158,002.70

Finding the Fourth Proportional to 686,503,385.10, 1,029,707,838.45 and 220,158,002.70

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Solution

The fourth proportional to 686,503,385.10, 1,029,707,838.45 and 220,158,002.70 is: 330,221,854.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,503,385.10 : 1,029,707,838.45 = 220,158,002.70 : x
  2. Step 2: Convert to fraction form
    686,503,385.10/1,029,707,838.45 = 220,158,002.70/x
  3. Step 3: Cross multiply
    686,503,385.10x = 1,029,707,838.45 × 220,158,002.70
  4. Step 4: Simplify right side
    686,503,385.10x = 226,698,421,077,686,272
  5. Step 5: Solve for x
    x = 226,698,421,077,686,272/686,503,385.10
  6. Step 6: Final answer
    x = 330,221,854.69

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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.