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Finding the Fourth Proportional to 1,289,631.53, 1,777,815.83 and 901,241.11

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Solution

The fourth proportional to 1,289,631.53, 1,777,815.83 and 901,241.11 is: 1,242,401.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,631.53 : 1,777,815.83 = 901,241.11 : x
  2. Step 2: Convert to fraction form
    1,289,631.53/1,777,815.83 = 901,241.11/x
  3. Step 3: Cross multiply
    1,289,631.53x = 1,777,815.83 × 901,241.11
  4. Step 4: Simplify right side
    1,289,631.53x = 1,602,240,712,004.77
  5. Step 5: Solve for x
    x = 1,602,240,712,004.77/1,289,631.53
  6. Step 6: Final answer
    x = 1,242,401.94

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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.