Home / 776,839.86-1,072,197.81-490,166.82

Finding the Fourth Proportional to 776,839.86, 1,072,197.81 and 490,166.82

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Solution

The fourth proportional to 776,839.86, 1,072,197.81 and 490,166.82 is: 676,530.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,839.86 : 1,072,197.81 = 490,166.82 : x
  2. Step 2: Convert to fraction form
    776,839.86/1,072,197.81 = 490,166.82/x
  3. Step 3: Cross multiply
    776,839.86x = 1,072,197.81 × 490,166.82
  4. Step 4: Simplify right side
    776,839.86x = 525,555,790,938.66
  5. Step 5: Solve for x
    x = 525,555,790,938.66/776,839.86
  6. Step 6: Final answer
    x = 676,530.41

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1.5x scale

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.