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Finding the Fourth Proportional to 559,694.91, 772,399.63 and 318,018.42

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Solution

The fourth proportional to 559,694.91, 772,399.63 and 318,018.42 is: 438,877.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,694.91 : 772,399.63 = 318,018.42 : x
  2. Step 2: Convert to fraction form
    559,694.91/772,399.63 = 318,018.42/x
  3. Step 3: Cross multiply
    559,694.91x = 772,399.63 × 318,018.42
  4. Step 4: Simplify right side
    559,694.91x = 245,637,309,146.14
  5. Step 5: Solve for x
    x = 245,637,309,146.14/559,694.91
  6. Step 6: Final answer
    x = 438,877.15

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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.