Home / 1,210,216.20-1,815,713.10-811,307.40

Finding the Fourth Proportional to 1,210,216.20, 1,815,713.10 and 811,307.40

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Solution

The fourth proportional to 1,210,216.20, 1,815,713.10 and 811,307.40 is: 1,217,221.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,216.20 : 1,815,713.10 = 811,307.40 : x
  2. Step 2: Convert to fraction form
    1,210,216.20/1,815,713.10 = 811,307.40/x
  3. Step 3: Cross multiply
    1,210,216.20x = 1,815,713.10 × 811,307.40
  4. Step 4: Simplify right side
    1,210,216.20x = 1,473,101,474,306.94
  5. Step 5: Solve for x
    x = 1,473,101,474,306.94/1,210,216.20
  6. Step 6: Final answer
    x = 1,217,221.74

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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.