Home / 923,928.39-1,386,331.20-640,055.79

Finding the Fourth Proportional to 923,928.39, 1,386,331.20 and 640,055.79

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Solution

The fourth proportional to 923,928.39, 1,386,331.20 and 640,055.79 is: 960,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,928.39 : 1,386,331.20 = 640,055.79 : x
  2. Step 2: Convert to fraction form
    923,928.39/1,386,331.20 = 640,055.79/x
  3. Step 3: Cross multiply
    923,928.39x = 1,386,331.20 × 640,055.79
  4. Step 4: Simplify right side
    923,928.39x = 887,329,311,417.65
  5. Step 5: Solve for x
    x = 887,329,311,417.65/923,928.39
  6. Step 6: Final answer
    x = 960,387.54

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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.