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Finding the Fourth Proportional to 630,914.40, 944,816.40 and 419,407.20

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Solution

The fourth proportional to 630,914.40, 944,816.40 and 419,407.20 is: 628,076.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,914.40 : 944,816.40 = 419,407.20 : x
  2. Step 2: Convert to fraction form
    630,914.40/944,816.40 = 419,407.20/x
  3. Step 3: Cross multiply
    630,914.40x = 944,816.40 × 419,407.20
  4. Step 4: Simplify right side
    630,914.40x = 396,262,800,838.08
  5. Step 5: Solve for x
    x = 396,262,800,838.08/630,914.40
  6. Step 6: Final answer
    x = 628,076.96

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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.