Home / 1,210,055.80-1,812,459.30-1,000,103.80

Finding the Fourth Proportional to 1,210,055.80, 1,812,459.30 and 1,000,103.80

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Solution

The fourth proportional to 1,210,055.80, 1,812,459.30 and 1,000,103.80 is: 1,497,986.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,055.80 : 1,812,459.30 = 1,000,103.80 : x
  2. Step 2: Convert to fraction form
    1,210,055.80/1,812,459.30 = 1,000,103.80/x
  3. Step 3: Cross multiply
    1,210,055.80x = 1,812,459.30 × 1,000,103.80
  4. Step 4: Simplify right side
    1,210,055.80x = 1,812,647,433,275.34
  5. Step 5: Solve for x
    x = 1,812,647,433,275.34/1,210,055.80
  6. Step 6: Final answer
    x = 1,497,986.65

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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.