Home / 511,746.87-767,291.82-212,434.05

Finding the Fourth Proportional to 511,746.87, 767,291.82 and 212,434.05

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Solution

The fourth proportional to 511,746.87, 767,291.82 and 212,434.05 is: 318,514.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,746.87 : 767,291.82 = 212,434.05 : x
  2. Step 2: Convert to fraction form
    511,746.87/767,291.82 = 212,434.05/x
  3. Step 3: Cross multiply
    511,746.87x = 767,291.82 × 212,434.05
  4. Step 4: Simplify right side
    511,746.87x = 162,998,908,854.47
  5. Step 5: Solve for x
    x = 162,998,908,854.47/511,746.87
  6. Step 6: Final answer
    x = 318,514.72

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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.