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Finding the Fourth Proportional to 559,726.96, 772,444.20 and 318,050.68

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Solution

The fourth proportional to 559,726.96, 772,444.20 and 318,050.68 is: 438,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,726.96 : 772,444.20 = 318,050.68 : x
  2. Step 2: Convert to fraction form
    559,726.96/772,444.20 = 318,050.68/x
  3. Step 3: Cross multiply
    559,726.96x = 772,444.20 × 318,050.68
  4. Step 4: Simplify right side
    559,726.96x = 245,676,403,072.06
  5. Step 5: Solve for x
    x = 245,676,403,072.06/559,726.96
  6. Step 6: Final answer
    x = 438,921.87

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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.