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Finding the Fourth Proportional to 410,214.40, 615,321.60 and 400,998.40

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Solution

The fourth proportional to 410,214.40, 615,321.60 and 400,998.40 is: 601,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,214.40 : 615,321.60 = 400,998.40 : x
  2. Step 2: Convert to fraction form
    410,214.40/615,321.60 = 400,998.40/x
  3. Step 3: Cross multiply
    410,214.40x = 615,321.60 × 400,998.40
  4. Step 4: Simplify right side
    410,214.40x = 246,742,977,085.44
  5. Step 5: Solve for x
    x = 246,742,977,085.44/410,214.40
  6. Step 6: Final answer
    x = 601,497.60

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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.