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Finding the Fourth Proportional to 771,820.72, 1,157,843.16 and 239,384.63

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Solution

The fourth proportional to 771,820.72, 1,157,843.16 and 239,384.63 is: 359,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,820.72 : 1,157,843.16 = 239,384.63 : x
  2. Step 2: Convert to fraction form
    771,820.72/1,157,843.16 = 239,384.63/x
  3. Step 3: Cross multiply
    771,820.72x = 1,157,843.16 × 239,384.63
  4. Step 4: Simplify right side
    771,820.72x = 277,169,859,349.24
  5. Step 5: Solve for x
    x = 277,169,859,349.24/771,820.72
  6. Step 6: Final answer
    x = 359,111.71

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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.