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Finding the Fourth Proportional to 618,929.20, 928,264.20 and 303,612.40

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Solution

The fourth proportional to 618,929.20, 928,264.20 and 303,612.40 is: 455,355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,929.20 : 928,264.20 = 303,612.40 : x
  2. Step 2: Convert to fraction form
    618,929.20/928,264.20 = 303,612.40/x
  3. Step 3: Cross multiply
    618,929.20x = 928,264.20 × 303,612.40
  4. Step 4: Simplify right side
    618,929.20x = 281,832,521,596.08
  5. Step 5: Solve for x
    x = 281,832,521,596.08/618,929.20
  6. Step 6: Final answer
    x = 455,355.03

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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.