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Finding the Fourth Proportional to 628,782.92, 867,720.20 and 342,302.93

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Solution

The fourth proportional to 628,782.92, 867,720.20 and 342,302.93 is: 472,377.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,782.92 : 867,720.20 = 342,302.93 : x
  2. Step 2: Convert to fraction form
    628,782.92/867,720.20 = 342,302.93/x
  3. Step 3: Cross multiply
    628,782.92x = 867,720.20 × 342,302.93
  4. Step 4: Simplify right side
    628,782.92x = 297,023,164,084.02
  5. Step 5: Solve for x
    x = 297,023,164,084.02/628,782.92
  6. Step 6: Final answer
    x = 472,377.91

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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.