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Finding the Fourth Proportional to 720,796.32, 1,080,144.72 and 346,381.92

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Solution

The fourth proportional to 720,796.32, 1,080,144.72 and 346,381.92 is: 519,068.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,796.32 : 1,080,144.72 = 346,381.92 : x
  2. Step 2: Convert to fraction form
    720,796.32/1,080,144.72 = 346,381.92/x
  3. Step 3: Cross multiply
    720,796.32x = 1,080,144.72 × 346,381.92
  4. Step 4: Simplify right side
    720,796.32x = 374,142,601,991.46
  5. Step 5: Solve for x
    x = 374,142,601,991.46/720,796.32
  6. Step 6: Final answer
    x = 519,068.41

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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.