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Finding the Fourth Proportional to 720,019.76, 1,080,182.40 and 246,578

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Solution

The fourth proportional to 720,019.76, 1,080,182.40 and 246,578 is: 369,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,019.76 : 1,080,182.40 = 246,578 : x
  2. Step 2: Convert to fraction form
    720,019.76/1,080,182.40 = 246,578/x
  3. Step 3: Cross multiply
    720,019.76x = 1,080,182.40 × 246,578
  4. Step 4: Simplify right side
    720,019.76x = 266,349,215,827.20
  5. Step 5: Solve for x
    x = 266,349,215,827.20/720,019.76
  6. Step 6: Final answer
    x = 369,919.31

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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.