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Finding the Fourth Proportional to 559,717.51, 772,410.45 and 318,000.52

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Solution

The fourth proportional to 559,717.51, 772,410.45 and 318,000.52 is: 438,840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,717.51 : 772,410.45 = 318,000.52 : x
  2. Step 2: Convert to fraction form
    559,717.51/772,410.45 = 318,000.52/x
  3. Step 3: Cross multiply
    559,717.51x = 772,410.45 × 318,000.52
  4. Step 4: Simplify right side
    559,717.51x = 245,626,924,753.43
  5. Step 5: Solve for x
    x = 245,626,924,753.43/559,717.51
  6. Step 6: Final answer
    x = 438,840.88

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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.