Home / 785,920.50-1,084,570.29-428,224.50

Finding the Fourth Proportional to 785,920.50, 1,084,570.29 and 428,224.50

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Solution

The fourth proportional to 785,920.50, 1,084,570.29 and 428,224.50 is: 590,949.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,920.50 : 1,084,570.29 = 428,224.50 : x
  2. Step 2: Convert to fraction form
    785,920.50/1,084,570.29 = 428,224.50/x
  3. Step 3: Cross multiply
    785,920.50x = 1,084,570.29 × 428,224.50
  4. Step 4: Simplify right side
    785,920.50x = 464,439,570,150.11
  5. Step 5: Solve for x
    x = 464,439,570,150.11/785,920.50
  6. Step 6: Final answer
    x = 590,949.81

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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.