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Finding the Fourth Proportional to 908,207.60, 1,359,978.60 and 720,028.40

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Solution

The fourth proportional to 908,207.60, 1,359,978.60 and 720,028.40 is: 1,078,193.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,207.60 : 1,359,978.60 = 720,028.40 : x
  2. Step 2: Convert to fraction form
    908,207.60/1,359,978.60 = 720,028.40/x
  3. Step 3: Cross multiply
    908,207.60x = 1,359,978.60 × 720,028.40
  4. Step 4: Simplify right side
    908,207.60x = 979,223,215,392.24
  5. Step 5: Solve for x
    x = 979,223,215,392.24/908,207.60
  6. Step 6: Final answer
    x = 1,078,193.15

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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.