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Finding the Fourth Proportional to 628,552.55, 867,385.89 and 342,066.49

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Solution

The fourth proportional to 628,552.55, 867,385.89 and 342,066.49 is: 472,042.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,552.55 : 867,385.89 = 342,066.49 : x
  2. Step 2: Convert to fraction form
    628,552.55/867,385.89 = 342,066.49/x
  3. Step 3: Cross multiply
    628,552.55x = 867,385.89 × 342,066.49
  4. Step 4: Simplify right side
    628,552.55x = 296,703,644,699.36
  5. Step 5: Solve for x
    x = 296,703,644,699.36/628,552.55
  6. Step 6: Final answer
    x = 472,042.70

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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.