Home / 866,051.72-1,300,255.56-487,238.96

Finding the Fourth Proportional to 866,051.72, 1,300,255.56 and 487,238.96

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Solution

The fourth proportional to 866,051.72, 1,300,255.56 and 487,238.96 is: 731,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,051.72 : 1,300,255.56 = 487,238.96 : x
  2. Step 2: Convert to fraction form
    866,051.72/1,300,255.56 = 487,238.96/x
  3. Step 3: Cross multiply
    866,051.72x = 1,300,255.56 × 487,238.96
  4. Step 4: Simplify right side
    866,051.72x = 633,535,166,788.62
  5. Step 5: Solve for x
    x = 633,535,166,788.62/866,051.72
  6. Step 6: Final answer
    x = 731,521.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.