Home / 1,279,132.20-1,916,171.10-830,165.40

Finding the Fourth Proportional to 1,279,132.20, 1,916,171.10 and 830,165.40

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Solution

The fourth proportional to 1,279,132.20, 1,916,171.10 and 830,165.40 is: 1,243,607.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,132.20 : 1,916,171.10 = 830,165.40 : x
  2. Step 2: Convert to fraction form
    1,279,132.20/1,916,171.10 = 830,165.40/x
  3. Step 3: Cross multiply
    1,279,132.20x = 1,916,171.10 × 830,165.40
  4. Step 4: Simplify right side
    1,279,132.20x = 1,590,738,947,699.94
  5. Step 5: Solve for x
    x = 1,590,738,947,699.94/1,279,132.20
  6. Step 6: Final answer
    x = 1,243,607.93

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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.