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Finding the Fourth Proportional to 1,318,317.06, 1,819,326.54 and 745,323.06

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Solution

The fourth proportional to 1,318,317.06, 1,819,326.54 and 745,323.06 is: 1,028,573.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,317.06 : 1,819,326.54 = 745,323.06 : x
  2. Step 2: Convert to fraction form
    1,318,317.06/1,819,326.54 = 745,323.06/x
  3. Step 3: Cross multiply
    1,318,317.06x = 1,819,326.54 × 745,323.06
  4. Step 4: Simplify right side
    1,318,317.06x = 1,355,986,023,932.01
  5. Step 5: Solve for x
    x = 1,355,986,023,932.01/1,318,317.06
  6. Step 6: Final answer
    x = 1,028,573.52

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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.