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Finding the Fourth Proportional to 442,922.20, 618,691.40 and 442,922.20

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Solution

The fourth proportional to 442,922.20, 618,691.40 and 442,922.20 is: 618,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,922.20 : 618,691.40 = 442,922.20 : x
  2. Step 2: Convert to fraction form
    442,922.20/618,691.40 = 442,922.20/x
  3. Step 3: Cross multiply
    442,922.20x = 618,691.40 × 442,922.20
  4. Step 4: Simplify right side
    442,922.20x = 274,032,156,009.08
  5. Step 5: Solve for x
    x = 274,032,156,009.08/442,922.20
  6. Step 6: Final answer
    x = 618,691.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.