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Finding the Fourth Proportional to 1,230,821.72, 1,845,641.78 and 581,857.62

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Solution

The fourth proportional to 1,230,821.72, 1,845,641.78 and 581,857.62 is: 872,507.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,821.72 : 1,845,641.78 = 581,857.62 : x
  2. Step 2: Convert to fraction form
    1,230,821.72/1,845,641.78 = 581,857.62/x
  3. Step 3: Cross multiply
    1,230,821.72x = 1,845,641.78 × 581,857.62
  4. Step 4: Simplify right side
    1,230,821.72x = 1,073,900,733,483.36
  5. Step 5: Solve for x
    x = 1,073,900,733,483.36/1,230,821.72
  6. Step 6: Final answer
    x = 872,507.14

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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.