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Finding the Fourth Proportional to 560,761.79, 773,841.20 and 319,039.16

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Solution

The fourth proportional to 560,761.79, 773,841.20 and 319,039.16 is: 440,268.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,761.79 : 773,841.20 = 319,039.16 : x
  2. Step 2: Convert to fraction form
    560,761.79/773,841.20 = 319,039.16/x
  3. Step 3: Cross multiply
    560,761.79x = 773,841.20 × 319,039.16
  4. Step 4: Simplify right side
    560,761.79x = 246,885,640,956.99
  5. Step 5: Solve for x
    x = 246,885,640,956.99/560,761.79
  6. Step 6: Final answer
    x = 440,268.31

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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.