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Finding the Fourth Proportional to 611,704.95, 917,557.43 and 422,748.15

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Solution

The fourth proportional to 611,704.95, 917,557.43 and 422,748.15 is: 634,122.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,704.95 : 917,557.43 = 422,748.15 : x
  2. Step 2: Convert to fraction form
    611,704.95/917,557.43 = 422,748.15/x
  3. Step 3: Cross multiply
    611,704.95x = 917,557.43 × 422,748.15
  4. Step 4: Simplify right side
    611,704.95x = 387,895,703,937.51
  5. Step 5: Solve for x
    x = 387,895,703,937.51/611,704.95
  6. Step 6: Final answer
    x = 634,122.23

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.