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Finding the Fourth Proportional to 431,045.44, 595,115.04 and 317,670.72

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Solution

The fourth proportional to 431,045.44, 595,115.04 and 317,670.72 is: 438,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,045.44 : 595,115.04 = 317,670.72 : x
  2. Step 2: Convert to fraction form
    431,045.44/595,115.04 = 317,670.72/x
  3. Step 3: Cross multiply
    431,045.44x = 595,115.04 × 317,670.72
  4. Step 4: Simplify right side
    431,045.44x = 189,050,623,239.63
  5. Step 5: Solve for x
    x = 189,050,623,239.63/431,045.44
  6. Step 6: Final answer
    x = 438,586.30

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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.