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Finding the Fourth Proportional to 559,355.58, 838,382.40 and 319,637.48

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Solution

The fourth proportional to 559,355.58, 838,382.40 and 319,637.48 is: 479,084.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,355.58 : 838,382.40 = 319,637.48 : x
  2. Step 2: Convert to fraction form
    559,355.58/838,382.40 = 319,637.48/x
  3. Step 3: Cross multiply
    559,355.58x = 838,382.40 × 319,637.48
  4. Step 4: Simplify right side
    559,355.58x = 267,978,433,420.44
  5. Step 5: Solve for x
    x = 267,978,433,420.44/559,355.58
  6. Step 6: Final answer
    x = 479,084.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.