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Finding the Fourth Proportional to 1,315,866.02, 1,973,869.50 and 417,375.95

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Solution

The fourth proportional to 1,315,866.02, 1,973,869.50 and 417,375.95 is: 626,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,866.02 : 1,973,869.50 = 417,375.95 : x
  2. Step 2: Convert to fraction form
    1,315,866.02/1,973,869.50 = 417,375.95/x
  3. Step 3: Cross multiply
    1,315,866.02x = 1,973,869.50 × 417,375.95
  4. Step 4: Simplify right side
    1,315,866.02x = 823,845,647,869.18
  5. Step 5: Solve for x
    x = 823,845,647,869.18/1,315,866.02
  6. Step 6: Final answer
    x = 626,086.27

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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.