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Finding the Fourth Proportional to 815,737.40, 1,223,606.10 and 815,737.40

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Solution

The fourth proportional to 815,737.40, 1,223,606.10 and 815,737.40 is: 1,223,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,737.40 : 1,223,606.10 = 815,737.40 : x
  2. Step 2: Convert to fraction form
    815,737.40/1,223,606.10 = 815,737.40/x
  3. Step 3: Cross multiply
    815,737.40x = 1,223,606.10 × 815,737.40
  4. Step 4: Simplify right side
    815,737.40x = 998,141,258,638.14
  5. Step 5: Solve for x
    x = 998,141,258,638.14/815,737.40
  6. Step 6: Final answer
    x = 1,223,606.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.