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Finding the Fourth Proportional to 1,318,786.02, 1,819,925.73 and 715,174.02

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Solution

The fourth proportional to 1,318,786.02, 1,819,925.73 and 715,174.02 is: 986,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,786.02 : 1,819,925.73 = 715,174.02 : x
  2. Step 2: Convert to fraction form
    1,318,786.02/1,819,925.73 = 715,174.02/x
  3. Step 3: Cross multiply
    1,318,786.02x = 1,819,925.73 × 715,174.02
  4. Step 4: Simplify right side
    1,318,786.02x = 1,301,563,600,425.53
  5. Step 5: Solve for x
    x = 1,301,563,600,425.53/1,318,786.02
  6. Step 6: Final answer
    x = 986,940.70

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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.