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Finding the Fourth Proportional to 1,223,108.30, 1,834,662.45 and 744,811.40

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Solution

The fourth proportional to 1,223,108.30, 1,834,662.45 and 744,811.40 is: 1,117,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,108.30 : 1,834,662.45 = 744,811.40 : x
  2. Step 2: Convert to fraction form
    1,223,108.30/1,834,662.45 = 744,811.40/x
  3. Step 3: Cross multiply
    1,223,108.30x = 1,834,662.45 × 744,811.40
  4. Step 4: Simplify right side
    1,223,108.30x = 1,366,477,507,911.93
  5. Step 5: Solve for x
    x = 1,366,477,507,911.93/1,223,108.30
  6. Step 6: Final answer
    x = 1,117,217.10

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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.