Home / 699,221.48-964,918.63-389,118.81

Finding the Fourth Proportional to 699,221.48, 964,918.63 and 389,118.81

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Solution

The fourth proportional to 699,221.48, 964,918.63 and 389,118.81 is: 536,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,221.48 : 964,918.63 = 389,118.81 : x
  2. Step 2: Convert to fraction form
    699,221.48/964,918.63 = 389,118.81/x
  3. Step 3: Cross multiply
    699,221.48x = 964,918.63 × 389,118.81
  4. Step 4: Simplify right side
    699,221.48x = 375,467,989,052.43
  5. Step 5: Solve for x
    x = 375,467,989,052.43/699,221.48
  6. Step 6: Final answer
    x = 536,980.06

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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.