Home / 482,738.40-724,237.20-430,509.60

Finding the Fourth Proportional to 482,738.40, 724,237.20 and 430,509.60

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Solution

The fourth proportional to 482,738.40, 724,237.20 and 430,509.60 is: 645,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,738.40 : 724,237.20 = 430,509.60 : x
  2. Step 2: Convert to fraction form
    482,738.40/724,237.20 = 430,509.60/x
  3. Step 3: Cross multiply
    482,738.40x = 724,237.20 × 430,509.60
  4. Step 4: Simplify right side
    482,738.40x = 311,791,067,277.12
  5. Step 5: Solve for x
    x = 311,791,067,277.12/482,738.40
  6. Step 6: Final answer
    x = 645,879.98

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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.