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Finding the Fourth Proportional to 582,131.61, 803,076.12 and 420,731.01

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Solution

The fourth proportional to 582,131.61, 803,076.12 and 420,731.01 is: 580,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,131.61 : 803,076.12 = 420,731.01 : x
  2. Step 2: Convert to fraction form
    582,131.61/803,076.12 = 420,731.01/x
  3. Step 3: Cross multiply
    582,131.61x = 803,076.12 × 420,731.01
  4. Step 4: Simplify right side
    582,131.61x = 337,879,027,074.48
  5. Step 5: Solve for x
    x = 337,879,027,074.48/582,131.61
  6. Step 6: Final answer
    x = 580,416.90

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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.