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Finding the Fourth Proportional to 629,803, 869,438.42 and 436,357.39

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Solution

The fourth proportional to 629,803, 869,438.42 and 436,357.39 is: 602,388.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,803 : 869,438.42 = 436,357.39 : x
  2. Step 2: Convert to fraction form
    629,803/869,438.42 = 436,357.39/x
  3. Step 3: Cross multiply
    629,803x = 869,438.42 × 436,357.39
  4. Step 4: Simplify right side
    629,803x = 379,385,875,369.73
  5. Step 5: Solve for x
    x = 379,385,875,369.73/629,803
  6. Step 6: Final answer
    x = 602,388.17

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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.