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Finding the Fourth Proportional to 625,707.33, 937,488.28 and 420,156.67

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Solution

The fourth proportional to 625,707.33, 937,488.28 and 420,156.67 is: 629,514.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,707.33 : 937,488.28 = 420,156.67 : x
  2. Step 2: Convert to fraction form
    625,707.33/937,488.28 = 420,156.67/x
  3. Step 3: Cross multiply
    625,707.33x = 937,488.28 × 420,156.67
  4. Step 4: Simplify right side
    625,707.33x = 393,891,953,040.30
  5. Step 5: Solve for x
    x = 393,891,953,040.30/625,707.33
  6. Step 6: Final answer
    x = 629,514.68

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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.