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Finding the Fourth Proportional to 410,418.40, 615,627.60 and 355,122.40

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Solution

The fourth proportional to 410,418.40, 615,627.60 and 355,122.40 is: 532,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,418.40 : 615,627.60 = 355,122.40 : x
  2. Step 2: Convert to fraction form
    410,418.40/615,627.60 = 355,122.40/x
  3. Step 3: Cross multiply
    410,418.40x = 615,627.60 × 355,122.40
  4. Step 4: Simplify right side
    410,418.40x = 218,623,150,818.24
  5. Step 5: Solve for x
    x = 218,623,150,818.24/410,418.40
  6. Step 6: Final answer
    x = 532,683.60

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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.