Home / 729,378.44-1,005,337.57-487,572.78

Finding the Fourth Proportional to 729,378.44, 1,005,337.57 and 487,572.78

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Solution

The fourth proportional to 729,378.44, 1,005,337.57 and 487,572.78 is: 672,045.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,378.44 : 1,005,337.57 = 487,572.78 : x
  2. Step 2: Convert to fraction form
    729,378.44/1,005,337.57 = 487,572.78/x
  3. Step 3: Cross multiply
    729,378.44x = 1,005,337.57 × 487,572.78
  4. Step 4: Simplify right side
    729,378.44x = 490,175,235,137.76
  5. Step 5: Solve for x
    x = 490,175,235,137.76/729,378.44
  6. Step 6: Final answer
    x = 672,045.14

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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.