Home / 839,309.20-1,259,488.68-340,673.20

Finding the Fourth Proportional to 839,309.20, 1,259,488.68 and 340,673.20

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Solution

The fourth proportional to 839,309.20, 1,259,488.68 and 340,673.20 is: 511,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,309.20 : 1,259,488.68 = 340,673.20 : x
  2. Step 2: Convert to fraction form
    839,309.20/1,259,488.68 = 340,673.20/x
  3. Step 3: Cross multiply
    839,309.20x = 1,259,488.68 × 340,673.20
  4. Step 4: Simplify right side
    839,309.20x = 429,074,038,979.38
  5. Step 5: Solve for x
    x = 429,074,038,979.38/839,309.20
  6. Step 6: Final answer
    x = 511,222.85

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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.