Home / 658,939.80-986,222.70-478,512.30

Finding the Fourth Proportional to 658,939.80, 986,222.70 and 478,512.30

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Solution

The fourth proportional to 658,939.80, 986,222.70 and 478,512.30 is: 716,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,939.80 : 986,222.70 = 478,512.30 : x
  2. Step 2: Convert to fraction form
    658,939.80/986,222.70 = 478,512.30/x
  3. Step 3: Cross multiply
    658,939.80x = 986,222.70 × 478,512.30
  4. Step 4: Simplify right side
    658,939.80x = 471,919,692,489.21
  5. Step 5: Solve for x
    x = 471,919,692,489.21/658,939.80
  6. Step 6: Final answer
    x = 716,180.28

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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.