Home / 1,281,142.20-1,921,886.10-439,951.80

Finding the Fourth Proportional to 1,281,142.20, 1,921,886.10 and 439,951.80

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Solution

The fourth proportional to 1,281,142.20, 1,921,886.10 and 439,951.80 is: 659,987.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,142.20 : 1,921,886.10 = 439,951.80 : x
  2. Step 2: Convert to fraction form
    1,281,142.20/1,921,886.10 = 439,951.80/x
  3. Step 3: Cross multiply
    1,281,142.20x = 1,921,886.10 × 439,951.80
  4. Step 4: Simplify right side
    1,281,142.20x = 845,537,249,089.98
  5. Step 5: Solve for x
    x = 845,537,249,089.98/1,281,142.20
  6. Step 6: Final answer
    x = 659,987.04

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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.