Home / 591,243.47-815,915.76-319,311.42

Finding the Fourth Proportional to 591,243.47, 815,915.76 and 319,311.42

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Solution

The fourth proportional to 591,243.47, 815,915.76 and 319,311.42 is: 440,649.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,243.47 : 815,915.76 = 319,311.42 : x
  2. Step 2: Convert to fraction form
    591,243.47/815,915.76 = 319,311.42/x
  3. Step 3: Cross multiply
    591,243.47x = 815,915.76 × 319,311.42
  4. Step 4: Simplify right side
    591,243.47x = 260,531,219,925.98
  5. Step 5: Solve for x
    x = 260,531,219,925.98/591,243.47
  6. Step 6: Final answer
    x = 440,649.64

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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.