Home / 927,926.40-1,280,645.04-520,138.56

Finding the Fourth Proportional to 927,926.40, 1,280,645.04 and 520,138.56

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Solution

The fourth proportional to 927,926.40, 1,280,645.04 and 520,138.56 is: 717,850.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,926.40 : 1,280,645.04 = 520,138.56 : x
  2. Step 2: Convert to fraction form
    927,926.40/1,280,645.04 = 520,138.56/x
  3. Step 3: Cross multiply
    927,926.40x = 1,280,645.04 × 520,138.56
  4. Step 4: Simplify right side
    927,926.40x = 666,112,866,976.74
  5. Step 5: Solve for x
    x = 666,112,866,976.74/927,926.40
  6. Step 6: Final answer
    x = 717,850.97

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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.