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Finding the Fourth Proportional to 665,827.50, 918,864.63 and 364,040.94

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Solution

The fourth proportional to 665,827.50, 918,864.63 and 364,040.94 is: 502,388.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,827.50 : 918,864.63 = 364,040.94 : x
  2. Step 2: Convert to fraction form
    665,827.50/918,864.63 = 364,040.94/x
  3. Step 3: Cross multiply
    665,827.50x = 918,864.63 × 364,040.94
  4. Step 4: Simplify right side
    665,827.50x = 334,504,343,637.95
  5. Step 5: Solve for x
    x = 334,504,343,637.95/665,827.50
  6. Step 6: Final answer
    x = 502,388.90

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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.