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Finding the Fourth Proportional to 606,787.20, 909,962.10 and 307,168.20

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Solution

The fourth proportional to 606,787.20, 909,962.10 and 307,168.20 is: 460,641.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,787.20 : 909,962.10 = 307,168.20 : x
  2. Step 2: Convert to fraction form
    606,787.20/909,962.10 = 307,168.20/x
  3. Step 3: Cross multiply
    606,787.20x = 909,962.10 × 307,168.20
  4. Step 4: Simplify right side
    606,787.20x = 279,511,420,325.22
  5. Step 5: Solve for x
    x = 279,511,420,325.22/606,787.20
  6. Step 6: Final answer
    x = 460,641.59

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Double scale
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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.