Home / 743,165.56-1,025,592.69-420,868.72

Finding the Fourth Proportional to 743,165.56, 1,025,592.69 and 420,868.72

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Solution

The fourth proportional to 743,165.56, 1,025,592.69 and 420,868.72 is: 580,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,165.56 : 1,025,592.69 = 420,868.72 : x
  2. Step 2: Convert to fraction form
    743,165.56/1,025,592.69 = 420,868.72/x
  3. Step 3: Cross multiply
    743,165.56x = 1,025,592.69 × 420,868.72
  4. Step 4: Simplify right side
    743,165.56x = 431,639,882,681.66
  5. Step 5: Solve for x
    x = 431,639,882,681.66/743,165.56
  6. Step 6: Final answer
    x = 580,812.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.