Home / 656,415.66-905,926.04-380,834.22

Finding the Fourth Proportional to 656,415.66, 905,926.04 and 380,834.22

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Solution

The fourth proportional to 656,415.66, 905,926.04 and 380,834.22 is: 525,593.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,415.66 : 905,926.04 = 380,834.22 : x
  2. Step 2: Convert to fraction form
    656,415.66/905,926.04 = 380,834.22/x
  3. Step 3: Cross multiply
    656,415.66x = 905,926.04 × 380,834.22
  4. Step 4: Simplify right side
    656,415.66x = 345,007,636,821.09
  5. Step 5: Solve for x
    x = 345,007,636,821.09/656,415.66
  6. Step 6: Final answer
    x = 525,593.25

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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.