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Finding the Fourth Proportional to 665,892.39, 918,931.50 and 364,086.39

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Solution

The fourth proportional to 665,892.39, 918,931.50 and 364,086.39 is: 502,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,892.39 : 918,931.50 = 364,086.39 : x
  2. Step 2: Convert to fraction form
    665,892.39/918,931.50 = 364,086.39/x
  3. Step 3: Cross multiply
    665,892.39x = 918,931.50 × 364,086.39
  4. Step 4: Simplify right side
    665,892.39x = 334,570,452,492.29
  5. Step 5: Solve for x
    x = 334,570,452,492.29/665,892.39
  6. Step 6: Final answer
    x = 502,439.22

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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.