Home / 1,219,822.20-1,683,949.50-812,165.40

Finding the Fourth Proportional to 1,219,822.20, 1,683,949.50 and 812,165.40

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Solution

The fourth proportional to 1,219,822.20, 1,683,949.50 and 812,165.40 is: 1,121,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,822.20 : 1,683,949.50 = 812,165.40 : x
  2. Step 2: Convert to fraction form
    1,219,822.20/1,683,949.50 = 812,165.40/x
  3. Step 3: Cross multiply
    1,219,822.20x = 1,683,949.50 × 812,165.40
  4. Step 4: Simplify right side
    1,219,822.20x = 1,367,645,519,247.30
  5. Step 5: Solve for x
    x = 1,367,645,519,247.30/1,219,822.20
  6. Step 6: Final answer
    x = 1,121,184.32

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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.