Home / 872,821.80-1,309,630.14-423,299.88

Finding the Fourth Proportional to 872,821.80, 1,309,630.14 and 423,299.88

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Solution

The fourth proportional to 872,821.80, 1,309,630.14 and 423,299.88 is: 635,142.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,821.80 : 1,309,630.14 = 423,299.88 : x
  2. Step 2: Convert to fraction form
    872,821.80/1,309,630.14 = 423,299.88/x
  3. Step 3: Cross multiply
    872,821.80x = 1,309,630.14 × 423,299.88
  4. Step 4: Simplify right side
    872,821.80x = 554,366,281,106.38
  5. Step 5: Solve for x
    x = 554,366,281,106.38/872,821.80
  6. Step 6: Final answer
    x = 635,142.57

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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.