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Finding the Fourth Proportional to 630,965.40, 944,892.90 and 419,458.20

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Solution

The fourth proportional to 630,965.40, 944,892.90 and 419,458.20 is: 628,153.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,965.40 : 944,892.90 = 419,458.20 : x
  2. Step 2: Convert to fraction form
    630,965.40/944,892.90 = 419,458.20/x
  3. Step 3: Cross multiply
    630,965.40x = 944,892.90 × 419,458.20
  4. Step 4: Simplify right side
    630,965.40x = 396,343,075,026.78
  5. Step 5: Solve for x
    x = 396,343,075,026.78/630,965.40
  6. Step 6: Final answer
    x = 628,153.42

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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.