Home / 856,641.60-1,284,239.52-540,401.76

Finding the Fourth Proportional to 856,641.60, 1,284,239.52 and 540,401.76

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Solution

The fourth proportional to 856,641.60, 1,284,239.52 and 540,401.76 is: 810,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,641.60 : 1,284,239.52 = 540,401.76 : x
  2. Step 2: Convert to fraction form
    856,641.60/1,284,239.52 = 540,401.76/x
  3. Step 3: Cross multiply
    856,641.60x = 1,284,239.52 × 540,401.76
  4. Step 4: Simplify right side
    856,641.60x = 694,005,296,869.56
  5. Step 5: Solve for x
    x = 694,005,296,869.56/856,641.60
  6. Step 6: Final answer
    x = 810,146.62

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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.