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Finding the Fourth Proportional to 720,351.84, 1,080,589.12 and 214,880.24

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Solution

The fourth proportional to 720,351.84, 1,080,589.12 and 214,880.24 is: 322,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,351.84 : 1,080,589.12 = 214,880.24 : x
  2. Step 2: Convert to fraction form
    720,351.84/1,080,589.12 = 214,880.24/x
  3. Step 3: Cross multiply
    720,351.84x = 1,080,589.12 × 214,880.24
  4. Step 4: Simplify right side
    720,351.84x = 232,197,249,446.99
  5. Step 5: Solve for x
    x = 232,197,249,446.99/720,351.84
  6. Step 6: Final answer
    x = 322,338.66

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1.5x scale

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.