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Finding the Fourth Proportional to 644,070.69, 965,030.90 and 283,704.66

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Solution

The fourth proportional to 644,070.69, 965,030.90 and 283,704.66 is: 425,083.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,070.69 : 965,030.90 = 283,704.66 : x
  2. Step 2: Convert to fraction form
    644,070.69/965,030.90 = 283,704.66/x
  3. Step 3: Cross multiply
    644,070.69x = 965,030.90 × 283,704.66
  4. Step 4: Simplify right side
    644,070.69x = 273,783,761,955.47
  5. Step 5: Solve for x
    x = 273,783,761,955.47/644,070.69
  6. Step 6: Final answer
    x = 425,083.40

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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.