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Finding the Fourth Proportional to 665,335.50, 918,185.67 and 363,548.94

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Solution

The fourth proportional to 665,335.50, 918,185.67 and 363,548.94 is: 501,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,335.50 : 918,185.67 = 363,548.94 : x
  2. Step 2: Convert to fraction form
    665,335.50/918,185.67 = 363,548.94/x
  3. Step 3: Cross multiply
    665,335.50x = 918,185.67 × 363,548.94
  4. Step 4: Simplify right side
    665,335.50x = 333,805,427,051.69
  5. Step 5: Solve for x
    x = 333,805,427,051.69/665,335.50
  6. Step 6: Final answer
    x = 501,709.93

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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.