Home / 830,470.40-1,245,244.80-331,270.40

Finding the Fourth Proportional to 830,470.40, 1,245,244.80 and 331,270.40

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Solution

The fourth proportional to 830,470.40, 1,245,244.80 and 331,270.40 is: 496,721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,470.40 : 1,245,244.80 = 331,270.40 : x
  2. Step 2: Convert to fraction form
    830,470.40/1,245,244.80 = 331,270.40/x
  3. Step 3: Cross multiply
    830,470.40x = 1,245,244.80 × 331,270.40
  4. Step 4: Simplify right side
    830,470.40x = 412,512,742,993.92
  5. Step 5: Solve for x
    x = 412,512,742,993.92/830,470.40
  6. Step 6: Final answer
    x = 496,721.79

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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.