Home / 679,959.90-1,019,939.85-306,711.90

Finding the Fourth Proportional to 679,959.90, 1,019,939.85 and 306,711.90

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Solution

The fourth proportional to 679,959.90, 1,019,939.85 and 306,711.90 is: 460,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,959.90 : 1,019,939.85 = 306,711.90 : x
  2. Step 2: Convert to fraction form
    679,959.90/1,019,939.85 = 306,711.90/x
  3. Step 3: Cross multiply
    679,959.90x = 1,019,939.85 × 306,711.90
  4. Step 4: Simplify right side
    679,959.90x = 312,827,689,279.22
  5. Step 5: Solve for x
    x = 312,827,689,279.22/679,959.90
  6. Step 6: Final answer
    x = 460,067.85

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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.