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Finding the Fourth Proportional to 1,406,615.22, 1,941,126.66 and 762,051.78

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Solution

The fourth proportional to 1,406,615.22, 1,941,126.66 and 762,051.78 is: 1,051,630.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406,615.22 : 1,941,126.66 = 762,051.78 : x
  2. Step 2: Convert to fraction form
    1,406,615.22/1,941,126.66 = 762,051.78/x
  3. Step 3: Cross multiply
    1,406,615.22x = 1,941,126.66 × 762,051.78
  4. Step 4: Simplify right side
    1,406,615.22x = 1,479,239,026,458.45
  5. Step 5: Solve for x
    x = 1,479,239,026,458.45/1,406,615.22
  6. Step 6: Final answer
    x = 1,051,630.19

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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.