Home / 810,412.40-1,215,618.60-249,618.80

Finding the Fourth Proportional to 810,412.40, 1,215,618.60 and 249,618.80

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Solution

The fourth proportional to 810,412.40, 1,215,618.60 and 249,618.80 is: 374,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,412.40 : 1,215,618.60 = 249,618.80 : x
  2. Step 2: Convert to fraction form
    810,412.40/1,215,618.60 = 249,618.80/x
  3. Step 3: Cross multiply
    810,412.40x = 1,215,618.60 × 249,618.80
  4. Step 4: Simplify right side
    810,412.40x = 303,441,256,189.68
  5. Step 5: Solve for x
    x = 303,441,256,189.68/810,412.40
  6. Step 6: Final answer
    x = 374,428.20

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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.