Home / 1,293,972.54-1,785,657.99-721,000.38

Finding the Fourth Proportional to 1,293,972.54, 1,785,657.99 and 721,000.38

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Solution

The fourth proportional to 1,293,972.54, 1,785,657.99 and 721,000.38 is: 994,967.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,972.54 : 1,785,657.99 = 721,000.38 : x
  2. Step 2: Convert to fraction form
    1,293,972.54/1,785,657.99 = 721,000.38/x
  3. Step 3: Cross multiply
    1,293,972.54x = 1,785,657.99 × 721,000.38
  4. Step 4: Simplify right side
    1,293,972.54x = 1,287,460,089,340.04
  5. Step 5: Solve for x
    x = 1,287,460,089,340.04/1,293,972.54
  6. Step 6: Final answer
    x = 994,967.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.