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Finding the Fourth Proportional to 691,478.56, 953,606.28 and 474,003.28

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Solution

The fourth proportional to 691,478.56, 953,606.28 and 474,003.28 is: 653,689.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,478.56 : 953,606.28 = 474,003.28 : x
  2. Step 2: Convert to fraction form
    691,478.56/953,606.28 = 474,003.28/x
  3. Step 3: Cross multiply
    691,478.56x = 953,606.28 × 474,003.28
  4. Step 4: Simplify right side
    691,478.56x = 452,012,504,548.60
  5. Step 5: Solve for x
    x = 452,012,504,548.60/691,478.56
  6. Step 6: Final answer
    x = 653,689.83

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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.