Home / 689,947.20-1,034,920.80-424,226.70

Finding the Fourth Proportional to 689,947.20, 1,034,920.80 and 424,226.70

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Solution

The fourth proportional to 689,947.20, 1,034,920.80 and 424,226.70 is: 636,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,947.20 : 1,034,920.80 = 424,226.70 : x
  2. Step 2: Convert to fraction form
    689,947.20/1,034,920.80 = 424,226.70/x
  3. Step 3: Cross multiply
    689,947.20x = 1,034,920.80 × 424,226.70
  4. Step 4: Simplify right side
    689,947.20x = 439,041,035,745.36
  5. Step 5: Solve for x
    x = 439,041,035,745.36/689,947.20
  6. Step 6: Final answer
    x = 636,340.05

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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.