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Finding the Fourth Proportional to 1,971,230.22, 2,955,713.52 and 771,748.20

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Solution

The fourth proportional to 1,971,230.22, 2,955,713.52 and 771,748.20 is: 1,157,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,230.22 : 2,955,713.52 = 771,748.20 : x
  2. Step 2: Convert to fraction form
    1,971,230.22/2,955,713.52 = 771,748.20/x
  3. Step 3: Cross multiply
    1,971,230.22x = 2,955,713.52 × 771,748.20
  4. Step 4: Simplify right side
    1,971,230.22x = 2,281,066,588,775.66
  5. Step 5: Solve for x
    x = 2,281,066,588,775.66/1,971,230.22
  6. Step 6: Final answer
    x = 1,157,179.19

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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.