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Finding the Fourth Proportional to 707,254.08, 976,145.21 and 401,358.90

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Solution

The fourth proportional to 707,254.08, 976,145.21 and 401,358.90 is: 553,951.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,254.08 : 976,145.21 = 401,358.90 : x
  2. Step 2: Convert to fraction form
    707,254.08/976,145.21 = 401,358.90/x
  3. Step 3: Cross multiply
    707,254.08x = 976,145.21 × 401,358.90
  4. Step 4: Simplify right side
    707,254.08x = 391,784,567,725.87
  5. Step 5: Solve for x
    x = 391,784,567,725.87/707,254.08
  6. Step 6: Final answer
    x = 553,951.65

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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.