Home / 1,187,959.53-1,781,152.12-429,701.20

Finding the Fourth Proportional to 1,187,959.53, 1,781,152.12 and 429,701.20

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Solution

The fourth proportional to 1,187,959.53, 1,781,152.12 and 429,701.20 is: 644,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,959.53 : 1,781,152.12 = 429,701.20 : x
  2. Step 2: Convert to fraction form
    1,187,959.53/1,781,152.12 = 429,701.20/x
  3. Step 3: Cross multiply
    1,187,959.53x = 1,781,152.12 × 429,701.20
  4. Step 4: Simplify right side
    1,187,959.53x = 765,363,203,346.54
  5. Step 5: Solve for x
    x = 765,363,203,346.54/1,187,959.53
  6. Step 6: Final answer
    x = 644,267.07

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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.