Home / 485,050.32-669,376.56-281,116.32

Finding the Fourth Proportional to 485,050.32, 669,376.56 and 281,116.32

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Solution

The fourth proportional to 485,050.32, 669,376.56 and 281,116.32 is: 387,944.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,050.32 : 669,376.56 = 281,116.32 : x
  2. Step 2: Convert to fraction form
    485,050.32/669,376.56 = 281,116.32/x
  3. Step 3: Cross multiply
    485,050.32x = 669,376.56 × 281,116.32
  4. Step 4: Simplify right side
    485,050.32x = 188,172,675,241.46
  5. Step 5: Solve for x
    x = 188,172,675,241.46/485,050.32
  6. Step 6: Final answer
    x = 387,944.65

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1.5x scale

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.