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Finding the Fourth Proportional to 917,195.20, 1,375,987.20 and 277,446.40

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Solution

The fourth proportional to 917,195.20, 1,375,987.20 and 277,446.40 is: 416,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,195.20 : 1,375,987.20 = 277,446.40 : x
  2. Step 2: Convert to fraction form
    917,195.20/1,375,987.20 = 277,446.40/x
  3. Step 3: Cross multiply
    917,195.20x = 1,375,987.20 × 277,446.40
  4. Step 4: Simplify right side
    917,195.20x = 381,762,695,086.08
  5. Step 5: Solve for x
    x = 381,762,695,086.08/917,195.20
  6. Step 6: Final answer
    x = 416,228.40

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1.5x scale

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.