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Finding the Fourth Proportional to 625,730.92, 863,511.78 and 603,128.68

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Solution

The fourth proportional to 625,730.92, 863,511.78 and 603,128.68 is: 832,320.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,730.92 : 863,511.78 = 603,128.68 : x
  2. Step 2: Convert to fraction form
    625,730.92/863,511.78 = 603,128.68/x
  3. Step 3: Cross multiply
    625,730.92x = 863,511.78 × 603,128.68
  4. Step 4: Simplify right side
    625,730.92x = 520,808,720,035.85
  5. Step 5: Solve for x
    x = 520,808,720,035.85/625,730.92
  6. Step 6: Final answer
    x = 832,320.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.