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Finding the Fourth Proportional to 608,833.17, 839,502.21 and 455,379.58

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Solution

The fourth proportional to 608,833.17, 839,502.21 and 455,379.58 is: 627,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,833.17 : 839,502.21 = 455,379.58 : x
  2. Step 2: Convert to fraction form
    608,833.17/839,502.21 = 455,379.58/x
  3. Step 3: Cross multiply
    608,833.17x = 839,502.21 × 455,379.58
  4. Step 4: Simplify right side
    608,833.17x = 382,292,159,601.36
  5. Step 5: Solve for x
    x = 382,292,159,601.36/608,833.17
  6. Step 6: Final answer
    x = 627,909.55

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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.