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Finding the Fourth Proportional to 659,825.95, 990,236.51 and 482,789.71

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Solution

The fourth proportional to 659,825.95, 990,236.51 and 482,789.71 is: 724,548.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,825.95 : 990,236.51 = 482,789.71 : x
  2. Step 2: Convert to fraction form
    659,825.95/990,236.51 = 482,789.71/x
  3. Step 3: Cross multiply
    659,825.95x = 990,236.51 × 482,789.71
  4. Step 4: Simplify right side
    659,825.95x = 478,075,995,080.36
  5. Step 5: Solve for x
    x = 478,075,995,080.36/659,825.95
  6. Step 6: Final answer
    x = 724,548.64

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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.