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Finding the Fourth Proportional to 666,026.37, 918,502.92 and 436,500.05

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Solution

The fourth proportional to 666,026.37, 918,502.92 and 436,500.05 is: 601,968.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,026.37 : 918,502.92 = 436,500.05 : x
  2. Step 2: Convert to fraction form
    666,026.37/918,502.92 = 436,500.05/x
  3. Step 3: Cross multiply
    666,026.37x = 918,502.92 × 436,500.05
  4. Step 4: Simplify right side
    666,026.37x = 400,926,565,912.63
  5. Step 5: Solve for x
    x = 400,926,565,912.63/666,026.37
  6. Step 6: Final answer
    x = 601,968.01

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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.