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Finding the Fourth Proportional to 555,778.42, 766,873.28 and 310,767.59

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Solution

The fourth proportional to 555,778.42, 766,873.28 and 310,767.59 is: 428,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,778.42 : 766,873.28 = 310,767.59 : x
  2. Step 2: Convert to fraction form
    555,778.42/766,873.28 = 310,767.59/x
  3. Step 3: Cross multiply
    555,778.42x = 766,873.28 × 310,767.59
  4. Step 4: Simplify right side
    555,778.42x = 238,319,363,755.10
  5. Step 5: Solve for x
    x = 238,319,363,755.10/555,778.42
  6. Step 6: Final answer
    x = 428,802.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.