Home / 880,136.70-1,321,079.85-431,364.30

Finding the Fourth Proportional to 880,136.70, 1,321,079.85 and 431,364.30

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Solution

The fourth proportional to 880,136.70, 1,321,079.85 and 431,364.30 is: 647,475.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,136.70 : 1,321,079.85 = 431,364.30 : x
  2. Step 2: Convert to fraction form
    880,136.70/1,321,079.85 = 431,364.30/x
  3. Step 3: Cross multiply
    880,136.70x = 1,321,079.85 × 431,364.30
  4. Step 4: Simplify right side
    880,136.70x = 569,866,684,739.36
  5. Step 5: Solve for x
    x = 569,866,684,739.36/880,136.70
  6. Step 6: Final answer
    x = 647,475.20

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Double scale
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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.