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Finding the Fourth Proportional to 618,994.80, 928,492.20 and 618,994.80

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Solution

The fourth proportional to 618,994.80, 928,492.20 and 618,994.80 is: 928,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,994.80 : 928,492.20 = 618,994.80 : x
  2. Step 2: Convert to fraction form
    618,994.80/928,492.20 = 618,994.80/x
  3. Step 3: Cross multiply
    618,994.80x = 928,492.20 × 618,994.80
  4. Step 4: Simplify right side
    618,994.80x = 574,731,843,640.56
  5. Step 5: Solve for x
    x = 574,731,843,640.56/618,994.80
  6. Step 6: Final answer
    x = 928,492.20

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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.