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Finding the Fourth Proportional to 622,663.56, 859,328.66 and 350,784.84

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Solution

The fourth proportional to 622,663.56, 859,328.66 and 350,784.84 is: 484,112.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,663.56 : 859,328.66 = 350,784.84 : x
  2. Step 2: Convert to fraction form
    622,663.56/859,328.66 = 350,784.84/x
  3. Step 3: Cross multiply
    622,663.56x = 859,328.66 × 350,784.84
  4. Step 4: Simplify right side
    622,663.56x = 301,439,466,505.51
  5. Step 5: Solve for x
    x = 301,439,466,505.51/622,663.56
  6. Step 6: Final answer
    x = 484,112.91

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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.