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Finding the Fourth Proportional to 561,870.32, 775,456.91 and 316,905.37

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Solution

The fourth proportional to 561,870.32, 775,456.91 and 316,905.37 is: 437,372.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,870.32 : 775,456.91 = 316,905.37 : x
  2. Step 2: Convert to fraction form
    561,870.32/775,456.91 = 316,905.37/x
  3. Step 3: Cross multiply
    561,870.32x = 775,456.91 × 316,905.37
  4. Step 4: Simplify right side
    561,870.32x = 245,746,455,459.44
  5. Step 5: Solve for x
    x = 245,746,455,459.44/561,870.32
  6. Step 6: Final answer
    x = 437,372.19

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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.