Home / 786,273.28-1,084,796.10-640,828.96

Finding the Fourth Proportional to 786,273.28, 1,084,796.10 and 640,828.96

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Solution

The fourth proportional to 786,273.28, 1,084,796.10 and 640,828.96 is: 884,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,273.28 : 1,084,796.10 = 640,828.96 : x
  2. Step 2: Convert to fraction form
    786,273.28/1,084,796.10 = 640,828.96/x
  3. Step 3: Cross multiply
    786,273.28x = 1,084,796.10 × 640,828.96
  4. Step 4: Simplify right side
    786,273.28x = 695,168,756,575.06
  5. Step 5: Solve for x
    x = 695,168,756,575.06/786,273.28
  6. Step 6: Final answer
    x = 884,131.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.