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Finding the Fourth Proportional to 900,251.60, 1,350,161.40 and 520,350.80

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Solution

The fourth proportional to 900,251.60, 1,350,161.40 and 520,350.80 is: 780,401.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,251.60 : 1,350,161.40 = 520,350.80 : x
  2. Step 2: Convert to fraction form
    900,251.60/1,350,161.40 = 520,350.80/x
  3. Step 3: Cross multiply
    900,251.60x = 1,350,161.40 × 520,350.80
  4. Step 4: Simplify right side
    900,251.60x = 702,557,564,619.12
  5. Step 5: Solve for x
    x = 702,557,564,619.12/900,251.60
  6. Step 6: Final answer
    x = 780,401.35

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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.