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Finding the Fourth Proportional to 558,453.12, 770,642.76 and 303,805.32

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Solution

The fourth proportional to 558,453.12, 770,642.76 and 303,805.32 is: 419,239.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,453.12 : 770,642.76 = 303,805.32 : x
  2. Step 2: Convert to fraction form
    558,453.12/770,642.76 = 303,805.32/x
  3. Step 3: Cross multiply
    558,453.12x = 770,642.76 × 303,805.32
  4. Step 4: Simplify right side
    558,453.12x = 234,125,370,307.48
  5. Step 5: Solve for x
    x = 234,125,370,307.48/558,453.12
  6. Step 6: Final answer
    x = 419,239.08

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Double scale
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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.