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Finding the Fourth Proportional to 624,188.40, 936,282.60 and 384,493.20

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Solution

The fourth proportional to 624,188.40, 936,282.60 and 384,493.20 is: 576,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,188.40 : 936,282.60 = 384,493.20 : x
  2. Step 2: Convert to fraction form
    624,188.40/936,282.60 = 384,493.20/x
  3. Step 3: Cross multiply
    624,188.40x = 936,282.60 × 384,493.20
  4. Step 4: Simplify right side
    624,188.40x = 359,994,292,978.32
  5. Step 5: Solve for x
    x = 359,994,292,978.32/624,188.40
  6. Step 6: Final answer
    x = 576,739.80

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Similar ratio
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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.