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Finding the Fourth Proportional to 908,460.45, 1,361,214.45 and 781,505.10

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Solution

The fourth proportional to 908,460.45, 1,361,214.45 and 781,505.10 is: 1,170,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,460.45 : 1,361,214.45 = 781,505.10 : x
  2. Step 2: Convert to fraction form
    908,460.45/1,361,214.45 = 781,505.10/x
  3. Step 3: Cross multiply
    908,460.45x = 1,361,214.45 × 781,505.10
  4. Step 4: Simplify right side
    908,460.45x = 1,063,796,034,868.70
  5. Step 5: Solve for x
    x = 1,063,796,034,868.70/908,460.45
  6. Step 6: Final answer
    x = 1,170,987.72

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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.