Home / 1,102,019.20-1,649,875.20-678,443.20

Finding the Fourth Proportional to 1,102,019.20, 1,649,875.20 and 678,443.20

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Solution

The fourth proportional to 1,102,019.20, 1,649,875.20 and 678,443.20 is: 1,015,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,019.20 : 1,649,875.20 = 678,443.20 : x
  2. Step 2: Convert to fraction form
    1,102,019.20/1,649,875.20 = 678,443.20/x
  3. Step 3: Cross multiply
    1,102,019.20x = 1,649,875.20 × 678,443.20
  4. Step 4: Simplify right side
    1,102,019.20x = 1,119,346,610,288.64
  5. Step 5: Solve for x
    x = 1,119,346,610,288.64/1,102,019.20
  6. Step 6: Final answer
    x = 1,015,723.33

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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.