Home / 1,219,882.20-1,684,032.30-812,225.40

Finding the Fourth Proportional to 1,219,882.20, 1,684,032.30 and 812,225.40

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Solution

The fourth proportional to 1,219,882.20, 1,684,032.30 and 812,225.40 is: 1,121,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,882.20 : 1,684,032.30 = 812,225.40 : x
  2. Step 2: Convert to fraction form
    1,219,882.20/1,684,032.30 = 812,225.40/x
  3. Step 3: Cross multiply
    1,219,882.20x = 1,684,032.30 × 812,225.40
  4. Step 4: Simplify right side
    1,219,882.20x = 1,367,813,808,480.42
  5. Step 5: Solve for x
    x = 1,367,813,808,480.42/1,219,882.20
  6. Step 6: Final answer
    x = 1,121,267.13

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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.