Home / 1,213,821.40-1,820,732.10-763,080.70

Finding the Fourth Proportional to 1,213,821.40, 1,820,732.10 and 763,080.70

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Solution

The fourth proportional to 1,213,821.40, 1,820,732.10 and 763,080.70 is: 1,144,621.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,821.40 : 1,820,732.10 = 763,080.70 : x
  2. Step 2: Convert to fraction form
    1,213,821.40/1,820,732.10 = 763,080.70/x
  3. Step 3: Cross multiply
    1,213,821.40x = 1,820,732.10 × 763,080.70
  4. Step 4: Simplify right side
    1,213,821.40x = 1,389,365,525,380.47
  5. Step 5: Solve for x
    x = 1,389,365,525,380.47/1,213,821.40
  6. Step 6: Final answer
    x = 1,144,621.05

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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.