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Finding the Fourth Proportional to 707,953.71, 976,967.31 and 385,656.89

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Solution

The fourth proportional to 707,953.71, 976,967.31 and 385,656.89 is: 532,201.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,953.71 : 976,967.31 = 385,656.89 : x
  2. Step 2: Convert to fraction form
    707,953.71/976,967.31 = 385,656.89/x
  3. Step 3: Cross multiply
    707,953.71x = 976,967.31 × 385,656.89
  4. Step 4: Simplify right side
    707,953.71x = 376,774,176,848.68
  5. Step 5: Solve for x
    x = 376,774,176,848.68/707,953.71
  6. Step 6: Final answer
    x = 532,201.71

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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.