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Finding the Fourth Proportional to 627,610.40, 941,415.60 and 438,653.60

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Solution

The fourth proportional to 627,610.40, 941,415.60 and 438,653.60 is: 657,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,610.40 : 941,415.60 = 438,653.60 : x
  2. Step 2: Convert to fraction form
    627,610.40/941,415.60 = 438,653.60/x
  3. Step 3: Cross multiply
    627,610.40x = 941,415.60 × 438,653.60
  4. Step 4: Simplify right side
    627,610.40x = 412,955,342,036.16
  5. Step 5: Solve for x
    x = 412,955,342,036.16/627,610.40
  6. Step 6: Final answer
    x = 657,980.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.