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Finding the Fourth Proportional to 424,314.72, 582,482.07 and 420,326.28

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Solution

The fourth proportional to 424,314.72, 582,482.07 and 420,326.28 is: 577,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,314.72 : 582,482.07 = 420,326.28 : x
  2. Step 2: Convert to fraction form
    424,314.72/582,482.07 = 420,326.28/x
  3. Step 3: Cross multiply
    424,314.72x = 582,482.07 × 420,326.28
  4. Step 4: Simplify right side
    424,314.72x = 244,832,521,649.80
  5. Step 5: Solve for x
    x = 244,832,521,649.80/424,314.72
  6. Step 6: Final answer
    x = 577,006.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.