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Finding the Fourth Proportional to 408,837.40, 613,256.10 and 346,629.40

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Solution

The fourth proportional to 408,837.40, 613,256.10 and 346,629.40 is: 519,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,837.40 : 613,256.10 = 346,629.40 : x
  2. Step 2: Convert to fraction form
    408,837.40/613,256.10 = 346,629.40/x
  3. Step 3: Cross multiply
    408,837.40x = 613,256.10 × 346,629.40
  4. Step 4: Simplify right side
    408,837.40x = 212,572,593,989.34
  5. Step 5: Solve for x
    x = 212,572,593,989.34/408,837.40
  6. Step 6: Final answer
    x = 519,944.10

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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.