Home / 684,722.80-1,025,115.90-419,002.30

Finding the Fourth Proportional to 684,722.80, 1,025,115.90 and 419,002.30

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Solution

The fourth proportional to 684,722.80, 1,025,115.90 and 419,002.30 is: 627,298.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,722.80 : 1,025,115.90 = 419,002.30 : x
  2. Step 2: Convert to fraction form
    684,722.80/1,025,115.90 = 419,002.30/x
  3. Step 3: Cross multiply
    684,722.80x = 1,025,115.90 × 419,002.30
  4. Step 4: Simplify right side
    684,722.80x = 429,525,919,866.57
  5. Step 5: Solve for x
    x = 429,525,919,866.57/684,722.80
  6. Step 6: Final answer
    x = 627,298.99

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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.