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Finding the Fourth Proportional to 507,976.52, 761,964.72 and 170,988.88

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Solution

The fourth proportional to 507,976.52, 761,964.72 and 170,988.88 is: 256,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,976.52 : 761,964.72 = 170,988.88 : x
  2. Step 2: Convert to fraction form
    507,976.52/761,964.72 = 170,988.88/x
  3. Step 3: Cross multiply
    507,976.52x = 761,964.72 × 170,988.88
  4. Step 4: Simplify right side
    507,976.52x = 130,287,494,072.31
  5. Step 5: Solve for x
    x = 130,287,494,072.31/507,976.52
  6. Step 6: Final answer
    x = 256,483.30

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Double scale
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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.