Home / 1,230,207.80-1,845,311.70-689,909.45

Finding the Fourth Proportional to 1,230,207.80, 1,845,311.70 and 689,909.45

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Solution

The fourth proportional to 1,230,207.80, 1,845,311.70 and 689,909.45 is: 1,034,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,207.80 : 1,845,311.70 = 689,909.45 : x
  2. Step 2: Convert to fraction form
    1,230,207.80/1,845,311.70 = 689,909.45/x
  3. Step 3: Cross multiply
    1,230,207.80x = 1,845,311.70 × 689,909.45
  4. Step 4: Simplify right side
    1,230,207.80x = 1,273,097,980,025.57
  5. Step 5: Solve for x
    x = 1,273,097,980,025.57/1,230,207.80
  6. Step 6: Final answer
    x = 1,034,864.18

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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.