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Finding the Fourth Proportional to 608,496.78, 839,468.43 and 407,357.58

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Solution

The fourth proportional to 608,496.78, 839,468.43 and 407,357.58 is: 561,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,496.78 : 839,468.43 = 407,357.58 : x
  2. Step 2: Convert to fraction form
    608,496.78/839,468.43 = 407,357.58/x
  3. Step 3: Cross multiply
    608,496.78x = 839,468.43 × 407,357.58
  4. Step 4: Simplify right side
    608,496.78x = 341,963,828,131.20
  5. Step 5: Solve for x
    x = 341,963,828,131.20/608,496.78
  6. Step 6: Final answer
    x = 561,981.33

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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.