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Finding the Fourth Proportional to 664,799.76, 917,420.04 and 362,991.60

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Solution

The fourth proportional to 664,799.76, 917,420.04 and 362,991.60 is: 500,926.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,799.76 : 917,420.04 = 362,991.60 : x
  2. Step 2: Convert to fraction form
    664,799.76/917,420.04 = 362,991.60/x
  3. Step 3: Cross multiply
    664,799.76x = 917,420.04 × 362,991.60
  4. Step 4: Simplify right side
    664,799.76x = 333,015,768,191.66
  5. Step 5: Solve for x
    x = 333,015,768,191.66/664,799.76
  6. Step 6: Final answer
    x = 500,926.43

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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.