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Finding the Fourth Proportional to 414,468.40, 621,702.60 and 407,556.40

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Solution

The fourth proportional to 414,468.40, 621,702.60 and 407,556.40 is: 611,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,468.40 : 621,702.60 = 407,556.40 : x
  2. Step 2: Convert to fraction form
    414,468.40/621,702.60 = 407,556.40/x
  3. Step 3: Cross multiply
    414,468.40x = 621,702.60 × 407,556.40
  4. Step 4: Simplify right side
    414,468.40x = 253,378,873,526.64
  5. Step 5: Solve for x
    x = 253,378,873,526.64/414,468.40
  6. Step 6: Final answer
    x = 611,334.60

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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.