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Finding the Fourth Proportional to 615,183.60, 922,775.40 and 402,607.20

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Solution

The fourth proportional to 615,183.60, 922,775.40 and 402,607.20 is: 603,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,183.60 : 922,775.40 = 402,607.20 : x
  2. Step 2: Convert to fraction form
    615,183.60/922,775.40 = 402,607.20/x
  3. Step 3: Cross multiply
    615,183.60x = 922,775.40 × 402,607.20
  4. Step 4: Simplify right side
    615,183.60x = 371,516,020,022.88
  5. Step 5: Solve for x
    x = 371,516,020,022.88/615,183.60
  6. Step 6: Final answer
    x = 603,910.80

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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.