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Finding the Fourth Proportional to 900,280.60, 1,350,204.90 and 520,379.80

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Solution

The fourth proportional to 900,280.60, 1,350,204.90 and 520,379.80 is: 780,444.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,280.60 : 1,350,204.90 = 520,379.80 : x
  2. Step 2: Convert to fraction form
    900,280.60/1,350,204.90 = 520,379.80/x
  3. Step 3: Cross multiply
    900,280.60x = 1,350,204.90 × 520,379.80
  4. Step 4: Simplify right side
    900,280.60x = 702,619,355,821.02
  5. Step 5: Solve for x
    x = 702,619,355,821.02/900,280.60
  6. Step 6: Final answer
    x = 780,444.85

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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.