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Finding the Fourth Proportional to 630,880.40, 944,765.40 and 419,373.20

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Solution

The fourth proportional to 630,880.40, 944,765.40 and 419,373.20 is: 628,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,880.40 : 944,765.40 = 419,373.20 : x
  2. Step 2: Convert to fraction form
    630,880.40/944,765.40 = 419,373.20/x
  3. Step 3: Cross multiply
    630,880.40x = 944,765.40 × 419,373.20
  4. Step 4: Simplify right side
    630,880.40x = 396,209,289,047.28
  5. Step 5: Solve for x
    x = 396,209,289,047.28/630,880.40
  6. Step 6: Final answer
    x = 628,025.99

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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.