Home / 790,796.75-1,091,297.55-428,220.59

Finding the Fourth Proportional to 790,796.75, 1,091,297.55 and 428,220.59

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Solution

The fourth proportional to 790,796.75, 1,091,297.55 and 428,220.59 is: 590,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,796.75 : 1,091,297.55 = 428,220.59 : x
  2. Step 2: Convert to fraction form
    790,796.75/1,091,297.55 = 428,220.59/x
  3. Step 3: Cross multiply
    790,796.75x = 1,091,297.55 × 428,220.59
  4. Step 4: Simplify right side
    790,796.75x = 467,316,075,270.07
  5. Step 5: Solve for x
    x = 467,316,075,270.07/790,796.75
  6. Step 6: Final answer
    x = 590,943.35

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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.