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Finding the Fourth Proportional to 629,490.38, 868,697.80 and 343,010.45

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Solution

The fourth proportional to 629,490.38, 868,697.80 and 343,010.45 is: 473,355.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,490.38 : 868,697.80 = 343,010.45 : x
  2. Step 2: Convert to fraction form
    629,490.38/868,697.80 = 343,010.45/x
  3. Step 3: Cross multiply
    629,490.38x = 868,697.80 × 343,010.45
  4. Step 4: Simplify right side
    629,490.38x = 297,972,424,606.23
  5. Step 5: Solve for x
    x = 297,972,424,606.23/629,490.38
  6. Step 6: Final answer
    x = 473,355.01

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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.