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Finding the Fourth Proportional to 629,454.76, 868,647.64 and 342,974.84

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Solution

The fourth proportional to 629,454.76, 868,647.64 and 342,974.84 is: 473,305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,454.76 : 868,647.64 = 342,974.84 : x
  2. Step 2: Convert to fraction form
    629,454.76/868,647.64 = 342,974.84/x
  3. Step 3: Cross multiply
    629,454.76x = 868,647.64 × 342,974.84
  4. Step 4: Simplify right side
    629,454.76x = 297,924,285,345.38
  5. Step 5: Solve for x
    x = 297,924,285,345.38/629,454.76
  6. Step 6: Final answer
    x = 473,305.32

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Double scale
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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.