Home / 689,562,081.40-1,034,847,006.90-485,488,737.40

Finding the Fourth Proportional to 689,562,081.40, 1,034,847,006.90 and 485,488,737.40

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Solution

The fourth proportional to 689,562,081.40, 1,034,847,006.90 and 485,488,737.40 is: 728,587,868.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,562,081.40 : 1,034,847,006.90 = 485,488,737.40 : x
  2. Step 2: Convert to fraction form
    689,562,081.40/1,034,847,006.90 = 485,488,737.40/x
  3. Step 3: Cross multiply
    689,562,081.40x = 1,034,847,006.90 × 485,488,737.40
  4. Step 4: Simplify right side
    689,562,081.40x = 502,406,566,782,050,048
  5. Step 5: Solve for x
    x = 502,406,566,782,050,048/689,562,081.40
  6. Step 6: Final answer
    x = 728,587,868.06

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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.