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Finding the Fourth Proportional to 628,548.80, 867,380.72 and 342,062.74

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Solution

The fourth proportional to 628,548.80, 867,380.72 and 342,062.74 is: 472,037.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,548.80 : 867,380.72 = 342,062.74 : x
  2. Step 2: Convert to fraction form
    628,548.80/867,380.72 = 342,062.74/x
  3. Step 3: Cross multiply
    628,548.80x = 867,380.72 × 342,062.74
  4. Step 4: Simplify right side
    628,548.80x = 296,698,624,393.08
  5. Step 5: Solve for x
    x = 296,698,624,393.08/628,548.80
  6. Step 6: Final answer
    x = 472,037.53

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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.