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Finding the Fourth Proportional to 1,971,398.40, 2,957,194.80 and 1,026,614.40

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Solution

The fourth proportional to 1,971,398.40, 2,957,194.80 and 1,026,614.40 is: 1,539,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,398.40 : 2,957,194.80 = 1,026,614.40 : x
  2. Step 2: Convert to fraction form
    1,971,398.40/2,957,194.80 = 1,026,614.40/x
  3. Step 3: Cross multiply
    1,971,398.40x = 2,957,194.80 × 1,026,614.40
  4. Step 4: Simplify right side
    1,971,398.40x = 3,035,898,765,285.12
  5. Step 5: Solve for x
    x = 3,035,898,765,285.12/1,971,398.40
  6. Step 6: Final answer
    x = 1,539,972.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.