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Finding the Fourth Proportional to 650,343.12, 980,389.15 and 606,991.92

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Solution

The fourth proportional to 650,343.12, 980,389.15 and 606,991.92 is: 915,037.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,343.12 : 980,389.15 = 606,991.92 : x
  2. Step 2: Convert to fraction form
    650,343.12/980,389.15 = 606,991.92/x
  3. Step 3: Cross multiply
    650,343.12x = 980,389.15 × 606,991.92
  4. Step 4: Simplify right side
    650,343.12x = 595,088,292,505.67
  5. Step 5: Solve for x
    x = 595,088,292,505.67/650,343.12
  6. Step 6: Final answer
    x = 915,037.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.