Home / 687,415.32-1,030,876.94-238,015.53

Finding the Fourth Proportional to 687,415.32, 1,030,876.94 and 238,015.53

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Solution

The fourth proportional to 687,415.32, 1,030,876.94 and 238,015.53 is: 356,938.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,415.32 : 1,030,876.94 = 238,015.53 : x
  2. Step 2: Convert to fraction form
    687,415.32/1,030,876.94 = 238,015.53/x
  3. Step 3: Cross multiply
    687,415.32x = 1,030,876.94 × 238,015.53
  4. Step 4: Simplify right side
    687,415.32x = 245,364,721,833.92
  5. Step 5: Solve for x
    x = 245,364,721,833.92/687,415.32
  6. Step 6: Final answer
    x = 356,938.11

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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.