Home / 746,115.10-1,120,339.05-431,187.10

Finding the Fourth Proportional to 746,115.10, 1,120,339.05 and 431,187.10

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Solution

The fourth proportional to 746,115.10, 1,120,339.05 and 431,187.10 is: 647,454.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,115.10 : 1,120,339.05 = 431,187.10 : x
  2. Step 2: Convert to fraction form
    746,115.10/1,120,339.05 = 431,187.10/x
  3. Step 3: Cross multiply
    746,115.10x = 1,120,339.05 × 431,187.10
  4. Step 4: Simplify right side
    746,115.10x = 483,075,745,986.26
  5. Step 5: Solve for x
    x = 483,075,745,986.26/746,115.10
  6. Step 6: Final answer
    x = 647,454.72

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Double scale
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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.