Home / 485,054.32-669,382.08-281,120.32

Finding the Fourth Proportional to 485,054.32, 669,382.08 and 281,120.32

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Solution

The fourth proportional to 485,054.32, 669,382.08 and 281,120.32 is: 387,950.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,054.32 : 669,382.08 = 281,120.32 : x
  2. Step 2: Convert to fraction form
    485,054.32/669,382.08 = 281,120.32/x
  3. Step 3: Cross multiply
    485,054.32x = 669,382.08 × 281,120.32
  4. Step 4: Simplify right side
    485,054.32x = 188,176,904,531.87
  5. Step 5: Solve for x
    x = 188,176,904,531.87/485,054.32
  6. Step 6: Final answer
    x = 387,950.17

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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.