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Finding the Fourth Proportional to 2,158,278.88, 2,977,962.80 and 1,252,374.88

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Solution

The fourth proportional to 2,158,278.88, 2,977,962.80 and 1,252,374.88 is: 1,728,009.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,278.88 : 2,977,962.80 = 1,252,374.88 : x
  2. Step 2: Convert to fraction form
    2,158,278.88/2,977,962.80 = 1,252,374.88/x
  3. Step 3: Cross multiply
    2,158,278.88x = 2,977,962.80 × 1,252,374.88
  4. Step 4: Simplify right side
    2,158,278.88x = 3,729,525,804,294.46
  5. Step 5: Solve for x
    x = 3,729,525,804,294.46/2,158,278.88
  6. Step 6: Final answer
    x = 1,728,009.22

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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.