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Finding the Fourth Proportional to 611,110.80, 916,301.70 and 374,623.20

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Solution

The fourth proportional to 611,110.80, 916,301.70 and 374,623.20 is: 561,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,110.80 : 916,301.70 = 374,623.20 : x
  2. Step 2: Convert to fraction form
    611,110.80/916,301.70 = 374,623.20/x
  3. Step 3: Cross multiply
    611,110.80x = 916,301.70 × 374,623.20
  4. Step 4: Simplify right side
    611,110.80x = 343,267,875,019.44
  5. Step 5: Solve for x
    x = 343,267,875,019.44/611,110.80
  6. Step 6: Final answer
    x = 561,711.35

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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.