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Finding the Fourth Proportional to 642,410.16, 886,514.49 and 355,924.50

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Solution

The fourth proportional to 642,410.16, 886,514.49 and 355,924.50 is: 491,169.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,410.16 : 886,514.49 = 355,924.50 : x
  2. Step 2: Convert to fraction form
    642,410.16/886,514.49 = 355,924.50/x
  3. Step 3: Cross multiply
    642,410.16x = 886,514.49 × 355,924.50
  4. Step 4: Simplify right side
    642,410.16x = 315,532,226,596.01
  5. Step 5: Solve for x
    x = 315,532,226,596.01/642,410.16
  6. Step 6: Final answer
    x = 491,169.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.