Home / 817,409.80-1,226,114.70-727,208.20

Finding the Fourth Proportional to 817,409.80, 1,226,114.70 and 727,208.20

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Solution

The fourth proportional to 817,409.80, 1,226,114.70 and 727,208.20 is: 1,090,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,409.80 : 1,226,114.70 = 727,208.20 : x
  2. Step 2: Convert to fraction form
    817,409.80/1,226,114.70 = 727,208.20/x
  3. Step 3: Cross multiply
    817,409.80x = 1,226,114.70 × 727,208.20
  4. Step 4: Simplify right side
    817,409.80x = 891,640,663,980.54
  5. Step 5: Solve for x
    x = 891,640,663,980.54/817,409.80
  6. Step 6: Final answer
    x = 1,090,812.30

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Double scale
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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.