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Finding the Fourth Proportional to 606,962.30, 910,443.45 and 212,978.30

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Solution

The fourth proportional to 606,962.30, 910,443.45 and 212,978.30 is: 319,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,962.30 : 910,443.45 = 212,978.30 : x
  2. Step 2: Convert to fraction form
    606,962.30/910,443.45 = 212,978.30/x
  3. Step 3: Cross multiply
    606,962.30x = 910,443.45 × 212,978.30
  4. Step 4: Simplify right side
    606,962.30x = 193,904,698,227.14
  5. Step 5: Solve for x
    x = 193,904,698,227.14/606,962.30
  6. Step 6: Final answer
    x = 319,467.45

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Similar ratio
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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.