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Finding the Fourth Proportional to 674,903.31, 1,012,728.64 and 404,366.62

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Solution

The fourth proportional to 674,903.31, 1,012,728.64 and 404,366.62 is: 606,773.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,903.31 : 1,012,728.64 = 404,366.62 : x
  2. Step 2: Convert to fraction form
    674,903.31/1,012,728.64 = 404,366.62/x
  3. Step 3: Cross multiply
    674,903.31x = 1,012,728.64 × 404,366.62
  4. Step 4: Simplify right side
    674,903.31x = 409,513,657,134.00
  5. Step 5: Solve for x
    x = 409,513,657,134.00/674,903.31
  6. Step 6: Final answer
    x = 606,773.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.