Home / 743,089.85-1,025,463.95-420,862.23

Finding the Fourth Proportional to 743,089.85, 1,025,463.95 and 420,862.23

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Solution

The fourth proportional to 743,089.85, 1,025,463.95 and 420,862.23 is: 580,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,089.85 : 1,025,463.95 = 420,862.23 : x
  2. Step 2: Convert to fraction form
    743,089.85/1,025,463.95 = 420,862.23/x
  3. Step 3: Cross multiply
    743,089.85x = 1,025,463.95 × 420,862.23
  4. Step 4: Simplify right side
    743,089.85x = 431,579,044,255.53
  5. Step 5: Solve for x
    x = 431,579,044,255.53/743,089.85
  6. Step 6: Final answer
    x = 580,789.85

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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.