Home / 638,448.40-957,672.60-283,085.20

Finding the Fourth Proportional to 638,448.40, 957,672.60 and 283,085.20

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Solution

The fourth proportional to 638,448.40, 957,672.60 and 283,085.20 is: 424,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,448.40 : 957,672.60 = 283,085.20 : x
  2. Step 2: Convert to fraction form
    638,448.40/957,672.60 = 283,085.20/x
  3. Step 3: Cross multiply
    638,448.40x = 957,672.60 × 283,085.20
  4. Step 4: Simplify right side
    638,448.40x = 271,102,939,505.52
  5. Step 5: Solve for x
    x = 271,102,939,505.52/638,448.40
  6. Step 6: Final answer
    x = 424,627.80

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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.