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Finding the Fourth Proportional to 630,190.40, 944,421.60 and 404,859.20

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Solution

The fourth proportional to 630,190.40, 944,421.60 and 404,859.20 is: 606,733.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,190.40 : 944,421.60 = 404,859.20 : x
  2. Step 2: Convert to fraction form
    630,190.40/944,421.60 = 404,859.20/x
  3. Step 3: Cross multiply
    630,190.40x = 944,421.60 × 404,859.20
  4. Step 4: Simplify right side
    630,190.40x = 382,357,773,438.72
  5. Step 5: Solve for x
    x = 382,357,773,438.72/630,190.40
  6. Step 6: Final answer
    x = 606,733.73

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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.