Home / 3,128,545.20-4,689,318.60-1,781,353.20

Finding the Fourth Proportional to 3,128,545.20, 4,689,318.60 and 1,781,353.20

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Solution

The fourth proportional to 3,128,545.20, 4,689,318.60 and 1,781,353.20 is: 2,670,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,545.20 : 4,689,318.60 = 1,781,353.20 : x
  2. Step 2: Convert to fraction form
    3,128,545.20/4,689,318.60 = 1,781,353.20/x
  3. Step 3: Cross multiply
    3,128,545.20x = 4,689,318.60 × 1,781,353.20
  4. Step 4: Simplify right side
    3,128,545.20x = 8,353,332,693,929.52
  5. Step 5: Solve for x
    x = 8,353,332,693,929.52/3,128,545.20
  6. Step 6: Final answer
    x = 2,670,037.40

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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.