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Finding the Fourth Proportional to 611,102.76, 916,640.06 and 359,976.32

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Solution

The fourth proportional to 611,102.76, 916,640.06 and 359,976.32 is: 539,956.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,102.76 : 916,640.06 = 359,976.32 : x
  2. Step 2: Convert to fraction form
    611,102.76/916,640.06 = 359,976.32/x
  3. Step 3: Cross multiply
    611,102.76x = 916,640.06 × 359,976.32
  4. Step 4: Simplify right side
    611,102.76x = 329,968,715,563.38
  5. Step 5: Solve for x
    x = 329,968,715,563.38/611,102.76
  6. Step 6: Final answer
    x = 539,956.19

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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.