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Finding the Fourth Proportional to 511,203.60, 766,805.40 and 325,040.40

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Solution

The fourth proportional to 511,203.60, 766,805.40 and 325,040.40 is: 487,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,203.60 : 766,805.40 = 325,040.40 : x
  2. Step 2: Convert to fraction form
    511,203.60/766,805.40 = 325,040.40/x
  3. Step 3: Cross multiply
    511,203.60x = 766,805.40 × 325,040.40
  4. Step 4: Simplify right side
    511,203.60x = 249,242,733,938.16
  5. Step 5: Solve for x
    x = 249,242,733,938.16/511,203.60
  6. Step 6: Final answer
    x = 487,560.60

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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.