Home / 927,387.65-1,389,270.31-639,148.25

Finding the Fourth Proportional to 927,387.65, 1,389,270.31 and 639,148.25

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Solution

The fourth proportional to 927,387.65, 1,389,270.31 and 639,148.25 is: 957,474.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,387.65 : 1,389,270.31 = 639,148.25 : x
  2. Step 2: Convert to fraction form
    927,387.65/1,389,270.31 = 639,148.25/x
  3. Step 3: Cross multiply
    927,387.65x = 1,389,270.31 × 639,148.25
  4. Step 4: Simplify right side
    927,387.65x = 887,949,689,288.76
  5. Step 5: Solve for x
    x = 887,949,689,288.76/927,387.65
  6. Step 6: Final answer
    x = 957,474.13

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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.