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Finding the Fourth Proportional to 659,134.60, 987,924.30 and 492,728.20

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Solution

The fourth proportional to 659,134.60, 987,924.30 and 492,728.20 is: 738,511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,134.60 : 987,924.30 = 492,728.20 : x
  2. Step 2: Convert to fraction form
    659,134.60/987,924.30 = 492,728.20/x
  3. Step 3: Cross multiply
    659,134.60x = 987,924.30 × 492,728.20
  4. Step 4: Simplify right side
    659,134.60x = 486,778,162,075.26
  5. Step 5: Solve for x
    x = 486,778,162,075.26/659,134.60
  6. Step 6: Final answer
    x = 738,511.01

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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.