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Finding the Fourth Proportional to 615,451.20, 922,485.60 and 260,404.80

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Solution

The fourth proportional to 615,451.20, 922,485.60 and 260,404.80 is: 390,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,451.20 : 922,485.60 = 260,404.80 : x
  2. Step 2: Convert to fraction form
    615,451.20/922,485.60 = 260,404.80/x
  3. Step 3: Cross multiply
    615,451.20x = 922,485.60 × 260,404.80
  4. Step 4: Simplify right side
    615,451.20x = 240,219,678,170.88
  5. Step 5: Solve for x
    x = 240,219,678,170.88/615,451.20
  6. Step 6: Final answer
    x = 390,314.74

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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.