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Finding the Fourth Proportional to 561,979.98, 775,533.15 and 316,967.94

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Solution

The fourth proportional to 561,979.98, 775,533.15 and 316,967.94 is: 437,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,979.98 : 775,533.15 = 316,967.94 : x
  2. Step 2: Convert to fraction form
    561,979.98/775,533.15 = 316,967.94/x
  3. Step 3: Cross multiply
    561,979.98x = 775,533.15 × 316,967.94
  4. Step 4: Simplify right side
    561,979.98x = 245,819,144,957.21
  5. Step 5: Solve for x
    x = 245,819,144,957.21/561,979.98
  6. Step 6: Final answer
    x = 437,416.20

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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.