Home / 1,119,786.70-1,679,680.05-665,109.40

Finding the Fourth Proportional to 1,119,786.70, 1,679,680.05 and 665,109.40

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Solution

The fourth proportional to 1,119,786.70, 1,679,680.05 and 665,109.40 is: 997,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,786.70 : 1,679,680.05 = 665,109.40 : x
  2. Step 2: Convert to fraction form
    1,119,786.70/1,679,680.05 = 665,109.40/x
  3. Step 3: Cross multiply
    1,119,786.70x = 1,679,680.05 × 665,109.40
  4. Step 4: Simplify right side
    1,119,786.70x = 1,117,170,990,247.47
  5. Step 5: Solve for x
    x = 1,117,170,990,247.47/1,119,786.70
  6. Step 6: Final answer
    x = 997,664.10

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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.