Home / 2,138,543.28-2,950,814.61-1,220,353.20

Finding the Fourth Proportional to 2,138,543.28, 2,950,814.61 and 1,220,353.20

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Solution

The fourth proportional to 2,138,543.28, 2,950,814.61 and 1,220,353.20 is: 1,683,873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,543.28 : 2,950,814.61 = 1,220,353.20 : x
  2. Step 2: Convert to fraction form
    2,138,543.28/2,950,814.61 = 1,220,353.20/x
  3. Step 3: Cross multiply
    2,138,543.28x = 2,950,814.61 × 1,220,353.20
  4. Step 4: Simplify right side
    2,138,543.28x = 3,601,036,051,920.25
  5. Step 5: Solve for x
    x = 3,601,036,051,920.25/2,138,543.28
  6. Step 6: Final answer
    x = 1,683,873.36

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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.