Home / 1,171,861.12-1,617,180.80-688,446.40

Finding the Fourth Proportional to 1,171,861.12, 1,617,180.80 and 688,446.40

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Solution

The fourth proportional to 1,171,861.12, 1,617,180.80 and 688,446.40 is: 950,063.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,861.12 : 1,617,180.80 = 688,446.40 : x
  2. Step 2: Convert to fraction form
    1,171,861.12/1,617,180.80 = 688,446.40/x
  3. Step 3: Cross multiply
    1,171,861.12x = 1,617,180.80 × 688,446.40
  4. Step 4: Simplify right side
    1,171,861.12x = 1,113,342,299,909.12
  5. Step 5: Solve for x
    x = 1,113,342,299,909.12/1,171,861.12
  6. Step 6: Final answer
    x = 950,063.35

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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.