Home / 1,313,728.40-1,971,370.20-865,744.40

Finding the Fourth Proportional to 1,313,728.40, 1,971,370.20 and 865,744.40

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Solution

The fourth proportional to 1,313,728.40, 1,971,370.20 and 865,744.40 is: 1,299,129.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,728.40 : 1,971,370.20 = 865,744.40 : x
  2. Step 2: Convert to fraction form
    1,313,728.40/1,971,370.20 = 865,744.40/x
  3. Step 3: Cross multiply
    1,313,728.40x = 1,971,370.20 × 865,744.40
  4. Step 4: Simplify right side
    1,313,728.40x = 1,706,702,710,976.88
  5. Step 5: Solve for x
    x = 1,706,702,710,976.88/1,313,728.40
  6. Step 6: Final answer
    x = 1,299,129.04

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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.