Home / 777,411.93-1,072,781.22-428,537.01

Finding the Fourth Proportional to 777,411.93, 1,072,781.22 and 428,537.01

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Solution

The fourth proportional to 777,411.93, 1,072,781.22 and 428,537.01 is: 591,355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,411.93 : 1,072,781.22 = 428,537.01 : x
  2. Step 2: Convert to fraction form
    777,411.93/1,072,781.22 = 428,537.01/x
  3. Step 3: Cross multiply
    777,411.93x = 1,072,781.22 × 428,537.01
  4. Step 4: Simplify right side
    777,411.93x = 459,726,456,402.95
  5. Step 5: Solve for x
    x = 459,726,456,402.95/777,411.93
  6. Step 6: Final answer
    x = 591,355.03

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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.