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Finding the Fourth Proportional to 615,074.40, 922,611.60 and 490,658.40

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Solution

The fourth proportional to 615,074.40, 922,611.60 and 490,658.40 is: 735,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,074.40 : 922,611.60 = 490,658.40 : x
  2. Step 2: Convert to fraction form
    615,074.40/922,611.60 = 490,658.40/x
  3. Step 3: Cross multiply
    615,074.40x = 922,611.60 × 490,658.40
  4. Step 4: Simplify right side
    615,074.40x = 452,687,131,477.44
  5. Step 5: Solve for x
    x = 452,687,131,477.44/615,074.40
  6. Step 6: Final answer
    x = 735,987.60

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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.