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Finding the Fourth Proportional to 1,315,843.89, 1,973,836.31 and 417,353.82

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Solution

The fourth proportional to 1,315,843.89, 1,973,836.31 and 417,353.82 is: 626,053.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,843.89 : 1,973,836.31 = 417,353.82 : x
  2. Step 2: Convert to fraction form
    1,315,843.89/1,973,836.31 = 417,353.82/x
  3. Step 3: Cross multiply
    1,315,843.89x = 1,973,836.31 × 417,353.82
  4. Step 4: Simplify right side
    1,315,843.89x = 823,788,121,946.44
  5. Step 5: Solve for x
    x = 823,788,121,946.44/1,315,843.89
  6. Step 6: Final answer
    x = 626,053.08

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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.