Home / 482,980.30-724,438.05-127,986.70

Finding the Fourth Proportional to 482,980.30, 724,438.05 and 127,986.70

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Solution

The fourth proportional to 482,980.30, 724,438.05 and 127,986.70 is: 191,971.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,980.30 : 724,438.05 = 127,986.70 : x
  2. Step 2: Convert to fraction form
    482,980.30/724,438.05 = 127,986.70/x
  3. Step 3: Cross multiply
    482,980.30x = 724,438.05 × 127,986.70
  4. Step 4: Simplify right side
    482,980.30x = 92,718,435,373.94
  5. Step 5: Solve for x
    x = 92,718,435,373.94/482,980.30
  6. Step 6: Final answer
    x = 191,971.46

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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.