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Finding the Fourth Proportional to 628,734.74, 867,654.04 and 342,256.97

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Solution

The fourth proportional to 628,734.74, 867,654.04 and 342,256.97 is: 472,314.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,734.74 : 867,654.04 = 342,256.97 : x
  2. Step 2: Convert to fraction form
    628,734.74/867,654.04 = 342,256.97/x
  3. Step 3: Cross multiply
    628,734.74x = 867,654.04 × 342,256.97
  4. Step 4: Simplify right side
    628,734.74x = 296,960,641,027.37
  5. Step 5: Solve for x
    x = 296,960,641,027.37/628,734.74
  6. Step 6: Final answer
    x = 472,314.67

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1.5x scale

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.