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Finding the Fourth Proportional to 1,318,713, 1,819,823.94 and 715,101.48

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Solution

The fourth proportional to 1,318,713, 1,819,823.94 and 715,101.48 is: 986,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,713 : 1,819,823.94 = 715,101.48 : x
  2. Step 2: Convert to fraction form
    1,318,713/1,819,823.94 = 715,101.48/x
  3. Step 3: Cross multiply
    1,318,713x = 1,819,823.94 × 715,101.48
  4. Step 4: Simplify right side
    1,318,713x = 1,301,358,792,833.43
  5. Step 5: Solve for x
    x = 1,301,358,792,833.43/1,318,713
  6. Step 6: Final answer
    x = 986,840.04

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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.