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Finding the Fourth Proportional to 1,787,689.68, 2,467,060.38 and 971,948.28

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Solution

The fourth proportional to 1,787,689.68, 2,467,060.38 and 971,948.28 is: 1,341,315.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,689.68 : 2,467,060.38 = 971,948.28 : x
  2. Step 2: Convert to fraction form
    1,787,689.68/2,467,060.38 = 971,948.28/x
  3. Step 3: Cross multiply
    1,787,689.68x = 2,467,060.38 × 971,948.28
  4. Step 4: Simplify right side
    1,787,689.68x = 2,397,855,092,997.15
  5. Step 5: Solve for x
    x = 2,397,855,092,997.15/1,787,689.68
  6. Step 6: Final answer
    x = 1,341,315.06

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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.