Home / 858,313.11-1,287,469.67-457,740.30

Finding the Fourth Proportional to 858,313.11, 1,287,469.67 and 457,740.30

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Solution

The fourth proportional to 858,313.11, 1,287,469.67 and 457,740.30 is: 686,610.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,313.11 : 1,287,469.67 = 457,740.30 : x
  2. Step 2: Convert to fraction form
    858,313.11/1,287,469.67 = 457,740.30/x
  3. Step 3: Cross multiply
    858,313.11x = 1,287,469.67 × 457,740.30
  4. Step 4: Simplify right side
    858,313.11x = 589,326,752,986.70
  5. Step 5: Solve for x
    x = 589,326,752,986.70/858,313.11
  6. Step 6: Final answer
    x = 686,610.45

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Similar ratio
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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.