Home / 990,378.72-1,486,120.05-534,960.78

Finding the Fourth Proportional to 990,378.72, 1,486,120.05 and 534,960.78

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Solution

The fourth proportional to 990,378.72, 1,486,120.05 and 534,960.78 is: 802,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,378.72 : 1,486,120.05 = 534,960.78 : x
  2. Step 2: Convert to fraction form
    990,378.72/1,486,120.05 = 534,960.78/x
  3. Step 3: Cross multiply
    990,378.72x = 1,486,120.05 × 534,960.78
  4. Step 4: Simplify right side
    990,378.72x = 795,015,941,121.64
  5. Step 5: Solve for x
    x = 795,015,941,121.64/990,378.72
  6. Step 6: Final answer
    x = 802,739.32

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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.