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Finding the Fourth Proportional to 1,318,821.02, 1,819,974.04 and 715,209.02

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Solution

The fourth proportional to 1,318,821.02, 1,819,974.04 and 715,209.02 is: 986,989.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,821.02 : 1,819,974.04 = 715,209.02 : x
  2. Step 2: Convert to fraction form
    1,318,821.02/1,819,974.04 = 715,209.02/x
  3. Step 3: Cross multiply
    1,318,821.02x = 1,819,974.04 × 715,209.02
  4. Step 4: Simplify right side
    1,318,821.02x = 1,301,661,849,573.84
  5. Step 5: Solve for x
    x = 1,301,661,849,573.84/1,318,821.02
  6. Step 6: Final answer
    x = 986,989.01

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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.