Home / 782,402.32-1,173,603.44-427,222.56

Finding the Fourth Proportional to 782,402.32, 1,173,603.44 and 427,222.56

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Solution

The fourth proportional to 782,402.32, 1,173,603.44 and 427,222.56 is: 640,833.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,402.32 : 1,173,603.44 = 427,222.56 : x
  2. Step 2: Convert to fraction form
    782,402.32/1,173,603.44 = 427,222.56/x
  3. Step 3: Cross multiply
    782,402.32x = 1,173,603.44 × 427,222.56
  4. Step 4: Simplify right side
    782,402.32x = 501,389,866,061.61
  5. Step 5: Solve for x
    x = 501,389,866,061.61/782,402.32
  6. Step 6: Final answer
    x = 640,833.82

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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.