Home / 1,345,959.40-2,020,688.70-1,080,020.20

Finding the Fourth Proportional to 1,345,959.40, 2,020,688.70 and 1,080,020.20

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Solution

The fourth proportional to 1,345,959.40, 2,020,688.70 and 1,080,020.20 is: 1,621,434.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,959.40 : 2,020,688.70 = 1,080,020.20 : x
  2. Step 2: Convert to fraction form
    1,345,959.40/2,020,688.70 = 1,080,020.20/x
  3. Step 3: Cross multiply
    1,345,959.40x = 2,020,688.70 × 1,080,020.20
  4. Step 4: Simplify right side
    1,345,959.40x = 2,182,384,613,911.74
  5. Step 5: Solve for x
    x = 2,182,384,613,911.74/1,345,959.40
  6. Step 6: Final answer
    x = 1,621,434.21

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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.