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Finding the Fourth Proportional to 694,222.82, 958,116.22 and 388,316.20

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Solution

The fourth proportional to 694,222.82, 958,116.22 and 388,316.20 is: 535,925.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,222.82 : 958,116.22 = 388,316.20 : x
  2. Step 2: Convert to fraction form
    694,222.82/958,116.22 = 388,316.20/x
  3. Step 3: Cross multiply
    694,222.82x = 958,116.22 × 388,316.20
  4. Step 4: Simplify right side
    694,222.82x = 372,052,047,313.47
  5. Step 5: Solve for x
    x = 372,052,047,313.47/694,222.82
  6. Step 6: Final answer
    x = 535,925.98

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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.