Home / 659,628.20-989,442.30-492,322.70

Finding the Fourth Proportional to 659,628.20, 989,442.30 and 492,322.70

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Solution

The fourth proportional to 659,628.20, 989,442.30 and 492,322.70 is: 738,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,628.20 : 989,442.30 = 492,322.70 : x
  2. Step 2: Convert to fraction form
    659,628.20/989,442.30 = 492,322.70/x
  3. Step 3: Cross multiply
    659,628.20x = 989,442.30 × 492,322.70
  4. Step 4: Simplify right side
    659,628.20x = 487,124,904,630.21
  5. Step 5: Solve for x
    x = 487,124,904,630.21/659,628.20
  6. Step 6: Final answer
    x = 738,484.05

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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.