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Finding the Fourth Proportional to 628,706.89, 867,580.32 and 342,209.89

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Solution

The fourth proportional to 628,706.89, 867,580.32 and 342,209.89 is: 472,230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,706.89 : 867,580.32 = 342,209.89 : x
  2. Step 2: Convert to fraction form
    628,706.89/867,580.32 = 342,209.89/x
  3. Step 3: Cross multiply
    628,706.89x = 867,580.32 × 342,209.89
  4. Step 4: Simplify right side
    628,706.89x = 296,894,565,873.37
  5. Step 5: Solve for x
    x = 296,894,565,873.37/628,706.89
  6. Step 6: Final answer
    x = 472,230.49

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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.