Home / 659,836.90-990,958.20-577,168.30

Finding the Fourth Proportional to 659,836.90, 990,958.20 and 577,168.30

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Solution

The fourth proportional to 659,836.90, 990,958.20 and 577,168.30 is: 866,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,836.90 : 990,958.20 = 577,168.30 : x
  2. Step 2: Convert to fraction form
    659,836.90/990,958.20 = 577,168.30/x
  3. Step 3: Cross multiply
    659,836.90x = 990,958.20 × 577,168.30
  4. Step 4: Simplify right side
    659,836.90x = 571,949,659,665.06
  5. Step 5: Solve for x
    x = 571,949,659,665.06/659,836.90
  6. Step 6: Final answer
    x = 866,804.60

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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.