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Finding the Fourth Proportional to 1,145,109.70, 1,717,664.55 and 827,848.90

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Solution

The fourth proportional to 1,145,109.70, 1,717,664.55 and 827,848.90 is: 1,241,773.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,109.70 : 1,717,664.55 = 827,848.90 : x
  2. Step 2: Convert to fraction form
    1,145,109.70/1,717,664.55 = 827,848.90/x
  3. Step 3: Cross multiply
    1,145,109.70x = 1,717,664.55 × 827,848.90
  4. Step 4: Simplify right side
    1,145,109.70x = 1,421,966,708,286.50
  5. Step 5: Solve for x
    x = 1,421,966,708,286.50/1,145,109.70
  6. Step 6: Final answer
    x = 1,241,773.35

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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.