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Finding the Fourth Proportional to 414,427.60, 621,641.40 and 331,483.60

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Solution

The fourth proportional to 414,427.60, 621,641.40 and 331,483.60 is: 497,225.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,427.60 : 621,641.40 = 331,483.60 : x
  2. Step 2: Convert to fraction form
    414,427.60/621,641.40 = 331,483.60/x
  3. Step 3: Cross multiply
    414,427.60x = 621,641.40 × 331,483.60
  4. Step 4: Simplify right side
    414,427.60x = 206,063,929,181.04
  5. Step 5: Solve for x
    x = 206,063,929,181.04/414,427.60
  6. Step 6: Final answer
    x = 497,225.40

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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.