Home / 1,211,047-1,815,212.68-491,221.44

Finding the Fourth Proportional to 1,211,047, 1,815,212.68 and 491,221.44

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Solution

The fourth proportional to 1,211,047, 1,815,212.68 and 491,221.44 is: 736,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,047 : 1,815,212.68 = 491,221.44 : x
  2. Step 2: Convert to fraction form
    1,211,047/1,815,212.68 = 491,221.44/x
  3. Step 3: Cross multiply
    1,211,047x = 1,815,212.68 × 491,221.44
  4. Step 4: Simplify right side
    1,211,047x = 891,671,386,575.86
  5. Step 5: Solve for x
    x = 891,671,386,575.86/1,211,047
  6. Step 6: Final answer
    x = 736,281.40

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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.