Home / 927,920.40-1,280,636.76-520,132.56

Finding the Fourth Proportional to 927,920.40, 1,280,636.76 and 520,132.56

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Solution

The fourth proportional to 927,920.40, 1,280,636.76 and 520,132.56 is: 717,842.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,920.40 : 1,280,636.76 = 520,132.56 : x
  2. Step 2: Convert to fraction form
    927,920.40/1,280,636.76 = 520,132.56/x
  3. Step 3: Cross multiply
    927,920.40x = 1,280,636.76 × 520,132.56
  4. Step 4: Simplify right side
    927,920.40x = 666,100,876,408.91
  5. Step 5: Solve for x
    x = 666,100,876,408.91/927,920.40
  6. Step 6: Final answer
    x = 717,842.69

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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.