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Finding the Fourth Proportional to 561,952.89, 775,570.95 and 316,987.93

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Solution

The fourth proportional to 561,952.89, 775,570.95 and 316,987.93 is: 437,486.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,952.89 : 775,570.95 = 316,987.93 : x
  2. Step 2: Convert to fraction form
    561,952.89/775,570.95 = 316,987.93/x
  3. Step 3: Cross multiply
    561,952.89x = 775,570.95 × 316,987.93
  4. Step 4: Simplify right side
    561,952.89x = 245,846,630,978.10
  5. Step 5: Solve for x
    x = 245,846,630,978.10/561,952.89
  6. Step 6: Final answer
    x = 437,486.19

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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.