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Finding the Fourth Proportional to 416,128.40, 624,192.60 and 346,086.80

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Solution

The fourth proportional to 416,128.40, 624,192.60 and 346,086.80 is: 519,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,128.40 : 624,192.60 = 346,086.80 : x
  2. Step 2: Convert to fraction form
    416,128.40/624,192.60 = 346,086.80/x
  3. Step 3: Cross multiply
    416,128.40x = 624,192.60 × 346,086.80
  4. Step 4: Simplify right side
    416,128.40x = 216,024,819,517.68
  5. Step 5: Solve for x
    x = 216,024,819,517.68/416,128.40
  6. Step 6: Final answer
    x = 519,130.20

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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.