Home / 858,981.20-1,288,471.80-839,298.20

Finding the Fourth Proportional to 858,981.20, 1,288,471.80 and 839,298.20

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Solution

The fourth proportional to 858,981.20, 1,288,471.80 and 839,298.20 is: 1,258,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,981.20 : 1,288,471.80 = 839,298.20 : x
  2. Step 2: Convert to fraction form
    858,981.20/1,288,471.80 = 839,298.20/x
  3. Step 3: Cross multiply
    858,981.20x = 1,288,471.80 × 839,298.20
  4. Step 4: Simplify right side
    858,981.20x = 1,081,412,062,490.76
  5. Step 5: Solve for x
    x = 1,081,412,062,490.76/858,981.20
  6. Step 6: Final answer
    x = 1,258,947.30

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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.