Home / 1,310,785.60-1,966,243.20-680,929.60

Finding the Fourth Proportional to 1,310,785.60, 1,966,243.20 and 680,929.60

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Solution

The fourth proportional to 1,310,785.60, 1,966,243.20 and 680,929.60 is: 1,021,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,785.60 : 1,966,243.20 = 680,929.60 : x
  2. Step 2: Convert to fraction form
    1,310,785.60/1,966,243.20 = 680,929.60/x
  3. Step 3: Cross multiply
    1,310,785.60x = 1,966,243.20 × 680,929.60
  4. Step 4: Simplify right side
    1,310,785.60x = 1,338,873,195,678.72
  5. Step 5: Solve for x
    x = 1,338,873,195,678.72/1,310,785.60
  6. Step 6: Final answer
    x = 1,021,428.06

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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.