Home / 738,768.44-1,019,456.51-428,647.08

Finding the Fourth Proportional to 738,768.44, 1,019,456.51 and 428,647.08

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Solution

The fourth proportional to 738,768.44, 1,019,456.51 and 428,647.08 is: 591,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,768.44 : 1,019,456.51 = 428,647.08 : x
  2. Step 2: Convert to fraction form
    738,768.44/1,019,456.51 = 428,647.08/x
  3. Step 3: Cross multiply
    738,768.44x = 1,019,456.51 × 428,647.08
  4. Step 4: Simplify right side
    738,768.44x = 436,987,054,055.26
  5. Step 5: Solve for x
    x = 436,987,054,055.26/738,768.44
  6. Step 6: Final answer
    x = 591,507.47

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Double scale
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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.