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Finding the Fourth Proportional to 665,748, 918,732.27 and 363,942

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Solution

The fourth proportional to 665,748, 918,732.27 and 363,942 is: 502,239.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,748 : 918,732.27 = 363,942 : x
  2. Step 2: Convert to fraction form
    665,748/918,732.27 = 363,942/x
  3. Step 3: Cross multiply
    665,748x = 918,732.27 × 363,942
  4. Step 4: Simplify right side
    665,748x = 334,365,259,808.34
  5. Step 5: Solve for x
    x = 334,365,259,808.34/665,748
  6. Step 6: Final answer
    x = 502,239.98

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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.