Home / 939,543.76-1,409,138.52-265,619.72

Finding the Fourth Proportional to 939,543.76, 1,409,138.52 and 265,619.72

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Solution

The fourth proportional to 939,543.76, 1,409,138.52 and 265,619.72 is: 398,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,543.76 : 1,409,138.52 = 265,619.72 : x
  2. Step 2: Convert to fraction form
    939,543.76/1,409,138.52 = 265,619.72/x
  3. Step 3: Cross multiply
    939,543.76x = 1,409,138.52 × 265,619.72
  4. Step 4: Simplify right side
    939,543.76x = 374,294,979,123.61
  5. Step 5: Solve for x
    x = 374,294,979,123.61/939,543.76
  6. Step 6: Final answer
    x = 398,379.51

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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.