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Finding the Fourth Proportional to 707,687.91, 976,602.60 and 385,403.39

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Solution

The fourth proportional to 707,687.91, 976,602.60 and 385,403.39 is: 531,853.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,687.91 : 976,602.60 = 385,403.39 : x
  2. Step 2: Convert to fraction form
    707,687.91/976,602.60 = 385,403.39/x
  3. Step 3: Cross multiply
    707,687.91x = 976,602.60 × 385,403.39
  4. Step 4: Simplify right side
    707,687.91x = 376,385,952,722.81
  5. Step 5: Solve for x
    x = 376,385,952,722.81/707,687.91
  6. Step 6: Final answer
    x = 531,853.02

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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.