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Finding the Fourth Proportional to 630,650.40, 944,420.40 and 419,143.20

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Solution

The fourth proportional to 630,650.40, 944,420.40 and 419,143.20 is: 627,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,650.40 : 944,420.40 = 419,143.20 : x
  2. Step 2: Convert to fraction form
    630,650.40/944,420.40 = 419,143.20/x
  3. Step 3: Cross multiply
    630,650.40x = 944,420.40 × 419,143.20
  4. Step 4: Simplify right side
    630,650.40x = 395,847,388,601.28
  5. Step 5: Solve for x
    x = 395,847,388,601.28/630,650.40
  6. Step 6: Final answer
    x = 627,681.18

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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.