Home / 858,311.11-1,287,466.67-457,738.30

Finding the Fourth Proportional to 858,311.11, 1,287,466.67 and 457,738.30

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Solution

The fourth proportional to 858,311.11, 1,287,466.67 and 457,738.30 is: 686,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,311.11 : 1,287,466.67 = 457,738.30 : x
  2. Step 2: Convert to fraction form
    858,311.11/1,287,466.67 = 457,738.30/x
  3. Step 3: Cross multiply
    858,311.11x = 1,287,466.67 × 457,738.30
  4. Step 4: Simplify right side
    858,311.11x = 589,322,804,832.46
  5. Step 5: Solve for x
    x = 589,322,804,832.46/858,311.11
  6. Step 6: Final answer
    x = 686,607.45

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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.