Home / 699,220.48-964,917.25-389,117.81

Finding the Fourth Proportional to 699,220.48, 964,917.25 and 389,117.81

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Solution

The fourth proportional to 699,220.48, 964,917.25 and 389,117.81 is: 536,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,220.48 : 964,917.25 = 389,117.81 : x
  2. Step 2: Convert to fraction form
    699,220.48/964,917.25 = 389,117.81/x
  3. Step 3: Cross multiply
    699,220.48x = 964,917.25 × 389,117.81
  4. Step 4: Simplify right side
    699,220.48x = 375,466,488,590.72
  5. Step 5: Solve for x
    x = 375,466,488,590.72/699,220.48
  6. Step 6: Final answer
    x = 536,978.68

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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.