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Finding the Fourth Proportional to 1,329,943.92, 1,835,367.90 and 786,545.52

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Solution

The fourth proportional to 1,329,943.92, 1,835,367.90 and 786,545.52 is: 1,085,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,943.92 : 1,835,367.90 = 786,545.52 : x
  2. Step 2: Convert to fraction form
    1,329,943.92/1,835,367.90 = 786,545.52/x
  3. Step 3: Cross multiply
    1,329,943.92x = 1,835,367.90 × 786,545.52
  4. Step 4: Simplify right side
    1,329,943.92x = 1,443,600,399,296.81
  5. Step 5: Solve for x
    x = 1,443,600,399,296.81/1,329,943.92
  6. Step 6: Final answer
    x = 1,085,459.60

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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.