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Finding the Fourth Proportional to 561,752.62, 775,176.55 and 319,987.94

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Solution

The fourth proportional to 561,752.62, 775,176.55 and 319,987.94 is: 441,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,752.62 : 775,176.55 = 319,987.94 : x
  2. Step 2: Convert to fraction form
    561,752.62/775,176.55 = 319,987.94/x
  3. Step 3: Cross multiply
    561,752.62x = 775,176.55 × 319,987.94
  4. Step 4: Simplify right side
    561,752.62x = 248,047,142,694.95
  5. Step 5: Solve for x
    x = 248,047,142,694.95/561,752.62
  6. Step 6: Final answer
    x = 441,559.39

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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.