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Finding the Fourth Proportional to 620,807.27, 856,719.66 and 375,797.66

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Solution

The fourth proportional to 620,807.27, 856,719.66 and 375,797.66 is: 518,604.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,807.27 : 856,719.66 = 375,797.66 : x
  2. Step 2: Convert to fraction form
    620,807.27/856,719.66 = 375,797.66/x
  3. Step 3: Cross multiply
    620,807.27x = 856,719.66 × 375,797.66
  4. Step 4: Simplify right side
    620,807.27x = 321,953,239,220.40
  5. Step 5: Solve for x
    x = 321,953,239,220.40/620,807.27
  6. Step 6: Final answer
    x = 518,604.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.