Home / 480,829.08-663,320.70-311,117.88

Finding the Fourth Proportional to 480,829.08, 663,320.70 and 311,117.88

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Solution

The fourth proportional to 480,829.08, 663,320.70 and 311,117.88 is: 429,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,829.08 : 663,320.70 = 311,117.88 : x
  2. Step 2: Convert to fraction form
    480,829.08/663,320.70 = 311,117.88/x
  3. Step 3: Cross multiply
    480,829.08x = 663,320.70 × 311,117.88
  4. Step 4: Simplify right side
    480,829.08x = 206,370,929,944.12
  5. Step 5: Solve for x
    x = 206,370,929,944.12/480,829.08
  6. Step 6: Final answer
    x = 429,198.10

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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.