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Finding the Fourth Proportional to 561,248.05, 774,510.64 and 316,245.43

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Solution

The fourth proportional to 561,248.05, 774,510.64 and 316,245.43 is: 436,412.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,248.05 : 774,510.64 = 316,245.43 : x
  2. Step 2: Convert to fraction form
    561,248.05/774,510.64 = 316,245.43/x
  3. Step 3: Cross multiply
    561,248.05x = 774,510.64 × 316,245.43
  4. Step 4: Simplify right side
    561,248.05x = 244,935,444,932.60
  5. Step 5: Solve for x
    x = 244,935,444,932.60/561,248.05
  6. Step 6: Final answer
    x = 436,412.11

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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.