Home / 511,508.71-705,899.08-278,948.39

Finding the Fourth Proportional to 511,508.71, 705,899.08 and 278,948.39

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Solution

The fourth proportional to 511,508.71, 705,899.08 and 278,948.39 is: 384,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,508.71 : 705,899.08 = 278,948.39 : x
  2. Step 2: Convert to fraction form
    511,508.71/705,899.08 = 278,948.39/x
  3. Step 3: Cross multiply
    511,508.71x = 705,899.08 × 278,948.39
  4. Step 4: Simplify right side
    511,508.71x = 196,909,407,118.59
  5. Step 5: Solve for x
    x = 196,909,407,118.59/511,508.71
  6. Step 6: Final answer
    x = 384,958.07

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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.