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Finding the Fourth Proportional to 669,415.76, 923,565.60 and 427,837.76

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Solution

The fourth proportional to 669,415.76, 923,565.60 and 427,837.76 is: 590,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,415.76 : 923,565.60 = 427,837.76 : x
  2. Step 2: Convert to fraction form
    669,415.76/923,565.60 = 427,837.76/x
  3. Step 3: Cross multiply
    669,415.76x = 923,565.60 × 427,837.76
  4. Step 4: Simplify right side
    669,415.76x = 395,136,237,517.06
  5. Step 5: Solve for x
    x = 395,136,237,517.06/669,415.76
  6. Step 6: Final answer
    x = 590,270.29

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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.