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Finding the Fourth Proportional to 485,504.14, 669,995.82 and 270,639.58

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Solution

The fourth proportional to 485,504.14, 669,995.82 and 270,639.58 is: 373,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,504.14 : 669,995.82 = 270,639.58 : x
  2. Step 2: Convert to fraction form
    485,504.14/669,995.82 = 270,639.58/x
  3. Step 3: Cross multiply
    485,504.14x = 669,995.82 × 270,639.58
  4. Step 4: Simplify right side
    485,504.14x = 181,327,387,326.56
  5. Step 5: Solve for x
    x = 181,327,387,326.56/485,504.14
  6. Step 6: Final answer
    x = 373,482.68

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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.