Home / 1,119,790.20-1,679,685.30-665,112.90

Finding the Fourth Proportional to 1,119,790.20, 1,679,685.30 and 665,112.90

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Solution

The fourth proportional to 1,119,790.20, 1,679,685.30 and 665,112.90 is: 997,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,790.20 : 1,679,685.30 = 665,112.90 : x
  2. Step 2: Convert to fraction form
    1,119,790.20/1,679,685.30 = 665,112.90/x
  3. Step 3: Cross multiply
    1,119,790.20x = 1,679,685.30 × 665,112.90
  4. Step 4: Simplify right side
    1,119,790.20x = 1,117,180,360,970.37
  5. Step 5: Solve for x
    x = 1,117,180,360,970.37/1,119,790.20
  6. Step 6: Final answer
    x = 997,669.35

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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.