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Finding the Fourth Proportional to 656,765.82, 906,318.72 and 370,283.40

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Solution

The fourth proportional to 656,765.82, 906,318.72 and 370,283.40 is: 510,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,765.82 : 906,318.72 = 370,283.40 : x
  2. Step 2: Convert to fraction form
    656,765.82/906,318.72 = 370,283.40/x
  3. Step 3: Cross multiply
    656,765.82x = 906,318.72 × 370,283.40
  4. Step 4: Simplify right side
    656,765.82x = 335,594,777,125.25
  5. Step 5: Solve for x
    x = 335,594,777,125.25/656,765.82
  6. Step 6: Final answer
    x = 510,980.88

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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.