Home / 680,705.76-1,021,210.92-207,428.16

Finding the Fourth Proportional to 680,705.76, 1,021,210.92 and 207,428.16

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Solution

The fourth proportional to 680,705.76, 1,021,210.92 and 207,428.16 is: 311,188.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,705.76 : 1,021,210.92 = 207,428.16 : x
  2. Step 2: Convert to fraction form
    680,705.76/1,021,210.92 = 207,428.16/x
  3. Step 3: Cross multiply
    680,705.76x = 1,021,210.92 × 207,428.16
  4. Step 4: Simplify right side
    680,705.76x = 211,827,902,107.51
  5. Step 5: Solve for x
    x = 211,827,902,107.51/680,705.76
  6. Step 6: Final answer
    x = 311,188.64

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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.