Home / 6,921,161.85-10,381,742.78-1,872,472.35

Finding the Fourth Proportional to 6,921,161.85, 10,381,742.78 and 1,872,472.35

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Solution

The fourth proportional to 6,921,161.85, 10,381,742.78 and 1,872,472.35 is: 2,808,708.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921,161.85 : 10,381,742.78 = 1,872,472.35 : x
  2. Step 2: Convert to fraction form
    6,921,161.85/10,381,742.78 = 1,872,472.35/x
  3. Step 3: Cross multiply
    6,921,161.85x = 10,381,742.78 × 1,872,472.35
  4. Step 4: Simplify right side
    6,921,161.85x = 19,439,526,290,999.77
  5. Step 5: Solve for x
    x = 19,439,526,290,999.77/6,921,161.85
  6. Step 6: Final answer
    x = 2,808,708.53

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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.