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Finding the Fourth Proportional to 3,120,359.40, 4,374,401.40 and 3,120,359.40

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Solution

The fourth proportional to 3,120,359.40, 4,374,401.40 and 3,120,359.40 is: 4,374,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,359.40 : 4,374,401.40 = 3,120,359.40 : x
  2. Step 2: Convert to fraction form
    3,120,359.40/4,374,401.40 = 3,120,359.40/x
  3. Step 3: Cross multiply
    3,120,359.40x = 4,374,401.40 × 3,120,359.40
  4. Step 4: Simplify right side
    3,120,359.40x = 13,649,704,527,863.16
  5. Step 5: Solve for x
    x = 13,649,704,527,863.16/3,120,359.40
  6. Step 6: Final answer
    x = 4,374,401.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.