Home / 669,905.22-924,236.52-428,329.20

Finding the Fourth Proportional to 669,905.22, 924,236.52 and 428,329.20

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Solution

The fourth proportional to 669,905.22, 924,236.52 and 428,329.20 is: 590,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,905.22 : 924,236.52 = 428,329.20 : x
  2. Step 2: Convert to fraction form
    669,905.22/924,236.52 = 428,329.20/x
  3. Step 3: Cross multiply
    669,905.22x = 924,236.52 × 428,329.20
  4. Step 4: Simplify right side
    669,905.22x = 395,877,489,222.38
  5. Step 5: Solve for x
    x = 395,877,489,222.38/669,905.22
  6. Step 6: Final answer
    x = 590,945.52

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.