Home / 479,633.30-661,905.98-272,890.29

Finding the Fourth Proportional to 479,633.30, 661,905.98 and 272,890.29

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Solution

The fourth proportional to 479,633.30, 661,905.98 and 272,890.29 is: 376,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,633.30 : 661,905.98 = 272,890.29 : x
  2. Step 2: Convert to fraction form
    479,633.30/661,905.98 = 272,890.29/x
  3. Step 3: Cross multiply
    479,633.30x = 661,905.98 × 272,890.29
  4. Step 4: Simplify right side
    479,633.30x = 180,627,715,517.16
  5. Step 5: Solve for x
    x = 180,627,715,517.16/479,633.30
  6. Step 6: Final answer
    x = 376,595.45

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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.