Home / 1,312,793.10-1,969,189.65-840,012.30

Finding the Fourth Proportional to 1,312,793.10, 1,969,189.65 and 840,012.30

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Solution

The fourth proportional to 1,312,793.10, 1,969,189.65 and 840,012.30 is: 1,260,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,793.10 : 1,969,189.65 = 840,012.30 : x
  2. Step 2: Convert to fraction form
    1,312,793.10/1,969,189.65 = 840,012.30/x
  3. Step 3: Cross multiply
    1,312,793.10x = 1,969,189.65 × 840,012.30
  4. Step 4: Simplify right side
    1,312,793.10x = 1,654,143,527,032.70
  5. Step 5: Solve for x
    x = 1,654,143,527,032.70/1,312,793.10
  6. Step 6: Final answer
    x = 1,260,018.45

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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.