Home / 810,905.60-1,216,243.20-249,996.80

Finding the Fourth Proportional to 810,905.60, 1,216,243.20 and 249,996.80

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Solution

The fourth proportional to 810,905.60, 1,216,243.20 and 249,996.80 is: 374,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,905.60 : 1,216,243.20 = 249,996.80 : x
  2. Step 2: Convert to fraction form
    810,905.60/1,216,243.20 = 249,996.80/x
  3. Step 3: Cross multiply
    810,905.60x = 1,216,243.20 × 249,996.80
  4. Step 4: Simplify right side
    810,905.60x = 304,056,908,021.76
  5. Step 5: Solve for x
    x = 304,056,908,021.76/810,905.60
  6. Step 6: Final answer
    x = 374,959.68

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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.