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Finding the Fourth Proportional to 707,288.68, 976,070.82 and 385,008.04

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Solution

The fourth proportional to 707,288.68, 976,070.82 and 385,008.04 is: 531,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,288.68 : 976,070.82 = 385,008.04 : x
  2. Step 2: Convert to fraction form
    707,288.68/976,070.82 = 385,008.04/x
  3. Step 3: Cross multiply
    707,288.68x = 976,070.82 × 385,008.04
  4. Step 4: Simplify right side
    707,288.68x = 375,795,113,309.39
  5. Step 5: Solve for x
    x = 375,795,113,309.39/707,288.68
  6. Step 6: Final answer
    x = 531,317.87

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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.