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Finding the Fourth Proportional to 439,426.88, 606,473.80 and 278,296.91

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Solution

The fourth proportional to 439,426.88, 606,473.80 and 278,296.91 is: 384,090.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,426.88 : 606,473.80 = 278,296.91 : x
  2. Step 2: Convert to fraction form
    439,426.88/606,473.80 = 278,296.91/x
  3. Step 3: Cross multiply
    439,426.88x = 606,473.80 × 278,296.91
  4. Step 4: Simplify right side
    439,426.88x = 168,779,780,807.85
  5. Step 5: Solve for x
    x = 168,779,780,807.85/439,426.88
  6. Step 6: Final answer
    x = 384,090.71

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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.