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Finding the Fourth Proportional to 486,081.20, 727,809.60 and 486,081.20

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Solution

The fourth proportional to 486,081.20, 727,809.60 and 486,081.20 is: 727,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,081.20 : 727,809.60 = 486,081.20 : x
  2. Step 2: Convert to fraction form
    486,081.20/727,809.60 = 486,081.20/x
  3. Step 3: Cross multiply
    486,081.20x = 727,809.60 × 486,081.20
  4. Step 4: Simplify right side
    486,081.20x = 353,774,563,739.52
  5. Step 5: Solve for x
    x = 353,774,563,739.52/486,081.20
  6. Step 6: Final answer
    x = 727,809.60

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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.