Home / 927,984.97-1,280,669.43-520,217.79

Finding the Fourth Proportional to 927,984.97, 1,280,669.43 and 520,217.79

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Solution

The fourth proportional to 927,984.97, 1,280,669.43 and 520,217.79 is: 717,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,984.97 : 1,280,669.43 = 520,217.79 : x
  2. Step 2: Convert to fraction form
    927,984.97/1,280,669.43 = 520,217.79/x
  3. Step 3: Cross multiply
    927,984.97x = 1,280,669.43 × 520,217.79
  4. Step 4: Simplify right side
    927,984.97x = 666,227,020,595.16
  5. Step 5: Solve for x
    x = 666,227,020,595.16/927,984.97
  6. Step 6: Final answer
    x = 717,928.68

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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.