Home / 1,187,957.94-1,781,149.79-429,699.63

Finding the Fourth Proportional to 1,187,957.94, 1,781,149.79 and 429,699.63

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Solution

The fourth proportional to 1,187,957.94, 1,781,149.79 and 429,699.63 is: 644,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,957.94 : 1,781,149.79 = 429,699.63 : x
  2. Step 2: Convert to fraction form
    1,187,957.94/1,781,149.79 = 429,699.63/x
  3. Step 3: Cross multiply
    1,187,957.94x = 1,781,149.79 × 429,699.63
  4. Step 4: Simplify right side
    1,187,957.94x = 765,359,400,132.52
  5. Step 5: Solve for x
    x = 765,359,400,132.52/1,187,957.94
  6. Step 6: Final answer
    x = 644,264.73

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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.