Home / 858,012.20-1,287,018.30-739,914.20

Finding the Fourth Proportional to 858,012.20, 1,287,018.30 and 739,914.20

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Solution

The fourth proportional to 858,012.20, 1,287,018.30 and 739,914.20 is: 1,109,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,012.20 : 1,287,018.30 = 739,914.20 : x
  2. Step 2: Convert to fraction form
    858,012.20/1,287,018.30 = 739,914.20/x
  3. Step 3: Cross multiply
    858,012.20x = 1,287,018.30 × 739,914.20
  4. Step 4: Simplify right side
    858,012.20x = 952,283,115,829.86
  5. Step 5: Solve for x
    x = 952,283,115,829.86/858,012.20
  6. Step 6: Final answer
    x = 1,109,871.30

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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.