Home / 1,787,688.80-2,679,200.40-721,858.40

Finding the Fourth Proportional to 1,787,688.80, 2,679,200.40 and 721,858.40

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Solution

The fourth proportional to 1,787,688.80, 2,679,200.40 and 721,858.40 is: 1,081,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,688.80 : 2,679,200.40 = 721,858.40 : x
  2. Step 2: Convert to fraction form
    1,787,688.80/2,679,200.40 = 721,858.40/x
  3. Step 3: Cross multiply
    1,787,688.80x = 2,679,200.40 × 721,858.40
  4. Step 4: Simplify right side
    1,787,688.80x = 1,934,003,314,023.36
  5. Step 5: Solve for x
    x = 1,934,003,314,023.36/1,787,688.80
  6. Step 6: Final answer
    x = 1,081,845.63

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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.