Home / 814,208.20-1,221,312.30-739,412.80

Finding the Fourth Proportional to 814,208.20, 1,221,312.30 and 739,412.80

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Solution

The fourth proportional to 814,208.20, 1,221,312.30 and 739,412.80 is: 1,109,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,208.20 : 1,221,312.30 = 739,412.80 : x
  2. Step 2: Convert to fraction form
    814,208.20/1,221,312.30 = 739,412.80/x
  3. Step 3: Cross multiply
    814,208.20x = 1,221,312.30 × 739,412.80
  4. Step 4: Simplify right side
    814,208.20x = 903,053,947,417.44
  5. Step 5: Solve for x
    x = 903,053,947,417.44/814,208.20
  6. Step 6: Final answer
    x = 1,109,119.20

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1.5x scale

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.