Home / 1,210,011.80-1,815,017.70-811,880.60

Finding the Fourth Proportional to 1,210,011.80, 1,815,017.70 and 811,880.60

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Solution

The fourth proportional to 1,210,011.80, 1,815,017.70 and 811,880.60 is: 1,217,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,011.80 : 1,815,017.70 = 811,880.60 : x
  2. Step 2: Convert to fraction form
    1,210,011.80/1,815,017.70 = 811,880.60/x
  3. Step 3: Cross multiply
    1,210,011.80x = 1,815,017.70 × 811,880.60
  4. Step 4: Simplify right side
    1,210,011.80x = 1,473,577,659,286.62
  5. Step 5: Solve for x
    x = 1,473,577,659,286.62/1,210,011.80
  6. Step 6: Final answer
    x = 1,217,820.90

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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.