Home / 1,187,299.18-1,781,137.91-429,063.89

Finding the Fourth Proportional to 1,187,299.18, 1,781,137.91 and 429,063.89

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Solution

The fourth proportional to 1,187,299.18, 1,781,137.91 and 429,063.89 is: 643,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,299.18 : 1,781,137.91 = 429,063.89 : x
  2. Step 2: Convert to fraction form
    1,187,299.18/1,781,137.91 = 429,063.89/x
  3. Step 3: Cross multiply
    1,187,299.18x = 1,781,137.91 × 429,063.89
  4. Step 4: Simplify right side
    1,187,299.18x = 764,221,965,816.58
  5. Step 5: Solve for x
    x = 764,221,965,816.58/1,187,299.18
  6. Step 6: Final answer
    x = 643,664.19

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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.