Home / 840,210.57-1,260,309.38-209,120.13

Finding the Fourth Proportional to 840,210.57, 1,260,309.38 and 209,120.13

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Solution

The fourth proportional to 840,210.57, 1,260,309.38 and 209,120.13 is: 313,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,210.57 : 1,260,309.38 = 209,120.13 : x
  2. Step 2: Convert to fraction form
    840,210.57/1,260,309.38 = 209,120.13/x
  3. Step 3: Cross multiply
    840,210.57x = 1,260,309.38 × 209,120.13
  4. Step 4: Simplify right side
    840,210.57x = 263,556,060,340.22
  5. Step 5: Solve for x
    x = 263,556,060,340.22/840,210.57
  6. Step 6: Final answer
    x = 313,678.58

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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.