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Finding the Fourth Proportional to 559,678.41, 772,374.29 and 317,956.59

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Solution

The fourth proportional to 559,678.41, 772,374.29 and 317,956.59 is: 438,790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,678.41 : 772,374.29 = 317,956.59 : x
  2. Step 2: Convert to fraction form
    559,678.41/772,374.29 = 317,956.59/x
  3. Step 3: Cross multiply
    559,678.41x = 772,374.29 × 317,956.59
  4. Step 4: Simplify right side
    559,678.41x = 245,581,493,862.29
  5. Step 5: Solve for x
    x = 245,581,493,862.29/559,678.41
  6. Step 6: Final answer
    x = 438,790.37

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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.