Home / 743,064.53-1,025,428.97-420,774.54

Finding the Fourth Proportional to 743,064.53, 1,025,428.97 and 420,774.54

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Solution

The fourth proportional to 743,064.53, 1,025,428.97 and 420,774.54 is: 580,668.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,064.53 : 1,025,428.97 = 420,774.54 : x
  2. Step 2: Convert to fraction form
    743,064.53/1,025,428.97 = 420,774.54/x
  3. Step 3: Cross multiply
    743,064.53x = 1,025,428.97 × 420,774.54
  4. Step 4: Simplify right side
    743,064.53x = 431,474,403,154.42
  5. Step 5: Solve for x
    x = 431,474,403,154.42/743,064.53
  6. Step 6: Final answer
    x = 580,668.82

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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.