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Finding the Fourth Proportional to 1,787,659.65, 2,467,018.98 and 971,918.22

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Solution

The fourth proportional to 1,787,659.65, 2,467,018.98 and 971,918.22 is: 1,341,273.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,659.65 : 2,467,018.98 = 971,918.22 : x
  2. Step 2: Convert to fraction form
    1,787,659.65/2,467,018.98 = 971,918.22/x
  3. Step 3: Cross multiply
    1,787,659.65x = 2,467,018.98 × 971,918.22
  4. Step 4: Simplify right side
    1,787,659.65x = 2,397,740,695,747.82
  5. Step 5: Solve for x
    x = 2,397,740,695,747.82/1,787,659.65
  6. Step 6: Final answer
    x = 1,341,273.60

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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.