Home / 745,878.40-1,118,817.60-213,431.20

Finding the Fourth Proportional to 745,878.40, 1,118,817.60 and 213,431.20

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Solution

The fourth proportional to 745,878.40, 1,118,817.60 and 213,431.20 is: 320,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,878.40 : 1,118,817.60 = 213,431.20 : x
  2. Step 2: Convert to fraction form
    745,878.40/1,118,817.60 = 213,431.20/x
  3. Step 3: Cross multiply
    745,878.40x = 1,118,817.60 × 213,431.20
  4. Step 4: Simplify right side
    745,878.40x = 238,790,582,949.12
  5. Step 5: Solve for x
    x = 238,790,582,949.12/745,878.40
  6. Step 6: Final answer
    x = 320,146.80

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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.