Home / 745,883.40-1,118,825.10-213,436.20

Finding the Fourth Proportional to 745,883.40, 1,118,825.10 and 213,436.20

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Solution

The fourth proportional to 745,883.40, 1,118,825.10 and 213,436.20 is: 320,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,883.40 : 1,118,825.10 = 213,436.20 : x
  2. Step 2: Convert to fraction form
    745,883.40/1,118,825.10 = 213,436.20/x
  3. Step 3: Cross multiply
    745,883.40x = 1,118,825.10 × 213,436.20
  4. Step 4: Simplify right side
    745,883.40x = 238,797,777,808.62
  5. Step 5: Solve for x
    x = 238,797,777,808.62/745,883.40
  6. Step 6: Final answer
    x = 320,154.30

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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.