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Finding the Fourth Proportional to 386,318.60, 579,477.90 and 365,582.60

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Solution

The fourth proportional to 386,318.60, 579,477.90 and 365,582.60 is: 548,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,318.60 : 579,477.90 = 365,582.60 : x
  2. Step 2: Convert to fraction form
    386,318.60/579,477.90 = 365,582.60/x
  3. Step 3: Cross multiply
    386,318.60x = 579,477.90 × 365,582.60
  4. Step 4: Simplify right side
    386,318.60x = 211,847,037,324.54
  5. Step 5: Solve for x
    x = 211,847,037,324.54/386,318.60
  6. Step 6: Final answer
    x = 548,373.90

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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.