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Finding the Fourth Proportional to 1,318,822.52, 1,819,976.10 and 715,210.52

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Solution

The fourth proportional to 1,318,822.52, 1,819,976.10 and 715,210.52 is: 986,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,822.52 : 1,819,976.10 = 715,210.52 : x
  2. Step 2: Convert to fraction form
    1,318,822.52/1,819,976.10 = 715,210.52/x
  3. Step 3: Cross multiply
    1,318,822.52x = 1,819,976.10 × 715,210.52
  4. Step 4: Simplify right side
    1,318,822.52x = 1,301,666,052,868.57
  5. Step 5: Solve for x
    x = 1,301,666,052,868.57/1,318,822.52
  6. Step 6: Final answer
    x = 986,991.07

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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.