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Finding the Fourth Proportional to 988,861.88, 1,364,656.16 and 559,206

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Solution

The fourth proportional to 988,861.88, 1,364,656.16 and 559,206 is: 771,719.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,861.88 : 1,364,656.16 = 559,206 : x
  2. Step 2: Convert to fraction form
    988,861.88/1,364,656.16 = 559,206/x
  3. Step 3: Cross multiply
    988,861.88x = 1,364,656.16 × 559,206
  4. Step 4: Simplify right side
    988,861.88x = 763,123,912,608.96
  5. Step 5: Solve for x
    x = 763,123,912,608.96/988,861.88
  6. Step 6: Final answer
    x = 771,719.42

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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.