Home / 785,821.48-1,084,440.90-428,125.48

Finding the Fourth Proportional to 785,821.48, 1,084,440.90 and 428,125.48

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Solution

The fourth proportional to 785,821.48, 1,084,440.90 and 428,125.48 is: 590,817.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,821.48 : 1,084,440.90 = 428,125.48 : x
  2. Step 2: Convert to fraction form
    785,821.48/1,084,440.90 = 428,125.48/x
  3. Step 3: Cross multiply
    785,821.48x = 1,084,440.90 × 428,125.48
  4. Step 4: Simplify right side
    785,821.48x = 464,276,780,844.13
  5. Step 5: Solve for x
    x = 464,276,780,844.13/785,821.48
  6. Step 6: Final answer
    x = 590,817.12

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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.