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Finding the Fourth Proportional to 629,921.75, 869,266.98 and 371,881.82

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Solution

The fourth proportional to 629,921.75, 869,266.98 and 371,881.82 is: 513,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,921.75 : 869,266.98 = 371,881.82 : x
  2. Step 2: Convert to fraction form
    629,921.75/869,266.98 = 371,881.82/x
  3. Step 3: Cross multiply
    629,921.75x = 869,266.98 × 371,881.82
  4. Step 4: Simplify right side
    629,921.75x = 323,264,589,894.02
  5. Step 5: Solve for x
    x = 323,264,589,894.02/629,921.75
  6. Step 6: Final answer
    x = 513,182.13

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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.