Home / 1,239,960.30-1,859,940.45-442,142.70

Finding the Fourth Proportional to 1,239,960.30, 1,859,940.45 and 442,142.70

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Solution

The fourth proportional to 1,239,960.30, 1,859,940.45 and 442,142.70 is: 663,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,960.30 : 1,859,940.45 = 442,142.70 : x
  2. Step 2: Convert to fraction form
    1,239,960.30/1,859,940.45 = 442,142.70/x
  3. Step 3: Cross multiply
    1,239,960.30x = 1,859,940.45 × 442,142.70
  4. Step 4: Simplify right side
    1,239,960.30x = 822,359,092,402.22
  5. Step 5: Solve for x
    x = 822,359,092,402.22/1,239,960.30
  6. Step 6: Final answer
    x = 663,214.05

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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.