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Finding the Fourth Proportional to 606,686.40, 910,029.60 and 407,620.80

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Solution

The fourth proportional to 606,686.40, 910,029.60 and 407,620.80 is: 611,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,686.40 : 910,029.60 = 407,620.80 : x
  2. Step 2: Convert to fraction form
    606,686.40/910,029.60 = 407,620.80/x
  3. Step 3: Cross multiply
    606,686.40x = 910,029.60 × 407,620.80
  4. Step 4: Simplify right side
    606,686.40x = 370,946,993,575.68
  5. Step 5: Solve for x
    x = 370,946,993,575.68/606,686.40
  6. Step 6: Final answer
    x = 611,431.20

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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.