Home / 7,191,487.92-9,924,287.12-3,928,347.84

Finding the Fourth Proportional to 7,191,487.92, 9,924,287.12 and 3,928,347.84

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Solution

The fourth proportional to 7,191,487.92, 9,924,287.12 and 3,928,347.84 is: 5,421,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191,487.92 : 9,924,287.12 = 3,928,347.84 : x
  2. Step 2: Convert to fraction form
    7,191,487.92/9,924,287.12 = 3,928,347.84/x
  3. Step 3: Cross multiply
    7,191,487.92x = 9,924,287.12 × 3,928,347.84
  4. Step 4: Simplify right side
    7,191,487.92x = 38,986,051,871,391.81
  5. Step 5: Solve for x
    x = 38,986,051,871,391.81/7,191,487.92
  6. Step 6: Final answer
    x = 5,421,138.48

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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.