Home / 858,468.20-1,288,739.10-852,247.40

Finding the Fourth Proportional to 858,468.20, 1,288,739.10 and 852,247.40

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Solution

The fourth proportional to 858,468.20, 1,288,739.10 and 852,247.40 is: 1,279,400.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,468.20 : 1,288,739.10 = 852,247.40 : x
  2. Step 2: Convert to fraction form
    858,468.20/1,288,739.10 = 852,247.40/x
  3. Step 3: Cross multiply
    858,468.20x = 1,288,739.10 × 852,247.40
  4. Step 4: Simplify right side
    858,468.20x = 1,098,324,547,253.34
  5. Step 5: Solve for x
    x = 1,098,324,547,253.34/858,468.20
  6. Step 6: Final answer
    x = 1,279,400.39

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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.