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Finding the Fourth Proportional to 603,680.20, 906,557.10 and 427,424.20

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Solution

The fourth proportional to 603,680.20, 906,557.10 and 427,424.20 is: 641,870.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,680.20 : 906,557.10 = 427,424.20 : x
  2. Step 2: Convert to fraction form
    603,680.20/906,557.10 = 427,424.20/x
  3. Step 3: Cross multiply
    603,680.20x = 906,557.10 × 427,424.20
  4. Step 4: Simplify right side
    603,680.20x = 387,484,443,221.82
  5. Step 5: Solve for x
    x = 387,484,443,221.82/603,680.20
  6. Step 6: Final answer
    x = 641,870.39

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1.5x scale

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.