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Finding the Fourth Proportional to 663,991.34, 916,308 and 362,185.34

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Solution

The fourth proportional to 663,991.34, 916,308 and 362,185.34 is: 499,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,991.34 : 916,308 = 362,185.34 : x
  2. Step 2: Convert to fraction form
    663,991.34/916,308 = 362,185.34/x
  3. Step 3: Cross multiply
    663,991.34x = 916,308 × 362,185.34
  4. Step 4: Simplify right side
    663,991.34x = 331,873,319,943.18
  5. Step 5: Solve for x
    x = 331,873,319,943.18/663,991.34
  6. Step 6: Final answer
    x = 499,815.74

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Double scale
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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.