Home / 498,961.28-689,295.12-431,776.64

Finding the Fourth Proportional to 498,961.28, 689,295.12 and 431,776.64

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Solution

The fourth proportional to 498,961.28, 689,295.12 and 431,776.64 is: 596,482.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,961.28 : 689,295.12 = 431,776.64 : x
  2. Step 2: Convert to fraction form
    498,961.28/689,295.12 = 431,776.64/x
  3. Step 3: Cross multiply
    498,961.28x = 689,295.12 × 431,776.64
  4. Step 4: Simplify right side
    498,961.28x = 297,621,530,882.00
  5. Step 5: Solve for x
    x = 297,621,530,882.00/498,961.28
  6. Step 6: Final answer
    x = 596,482.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.