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Finding the Fourth Proportional to 665,858.16, 918,888.12 and 364,052.16

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Solution

The fourth proportional to 665,858.16, 918,888.12 and 364,052.16 is: 502,394.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,858.16 : 918,888.12 = 364,052.16 : x
  2. Step 2: Convert to fraction form
    665,858.16/918,888.12 = 364,052.16/x
  3. Step 3: Cross multiply
    665,858.16x = 918,888.12 × 364,052.16
  4. Step 4: Simplify right side
    665,858.16x = 334,523,204,884.34
  5. Step 5: Solve for x
    x = 334,523,204,884.34/665,858.16
  6. Step 6: Final answer
    x = 502,394.09

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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.