Home / 1,198,920-1,654,557.12-689,621.76

Finding the Fourth Proportional to 1,198,920, 1,654,557.12 and 689,621.76

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Solution

The fourth proportional to 1,198,920, 1,654,557.12 and 689,621.76 is: 951,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,920 : 1,654,557.12 = 689,621.76 : x
  2. Step 2: Convert to fraction form
    1,198,920/1,654,557.12 = 689,621.76/x
  3. Step 3: Cross multiply
    1,198,920x = 1,654,557.12 × 689,621.76
  4. Step 4: Simplify right side
    1,198,920x = 1,141,018,593,114.93
  5. Step 5: Solve for x
    x = 1,141,018,593,114.93/1,198,920
  6. Step 6: Final answer
    x = 951,705.36

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1.5x scale

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.