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Finding the Fourth Proportional to 439,431, 606,479.52 and 278,301.06

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Solution

The fourth proportional to 439,431, 606,479.52 and 278,301.06 is: 384,096.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,431 : 606,479.52 = 278,301.06 : x
  2. Step 2: Convert to fraction form
    439,431/606,479.52 = 278,301.06/x
  3. Step 3: Cross multiply
    439,431x = 606,479.52 × 278,301.06
  4. Step 4: Simplify right side
    439,431x = 168,783,893,284.29
  5. Step 5: Solve for x
    x = 168,783,893,284.29/439,431
  6. Step 6: Final answer
    x = 384,096.46

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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.