Home / 839,296.20-1,258,810.65-278,330.70

Finding the Fourth Proportional to 839,296.20, 1,258,810.65 and 278,330.70

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Solution

The fourth proportional to 839,296.20, 1,258,810.65 and 278,330.70 is: 417,451.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,296.20 : 1,258,810.65 = 278,330.70 : x
  2. Step 2: Convert to fraction form
    839,296.20/1,258,810.65 = 278,330.70/x
  3. Step 3: Cross multiply
    839,296.20x = 1,258,810.65 × 278,330.70
  4. Step 4: Simplify right side
    839,296.20x = 350,365,649,381.96
  5. Step 5: Solve for x
    x = 350,365,649,381.96/839,296.20
  6. Step 6: Final answer
    x = 417,451.73

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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.