Home / 919,147.25-1,268,404.97-511,240.31

Finding the Fourth Proportional to 919,147.25, 1,268,404.97 and 511,240.31

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Solution

The fourth proportional to 919,147.25, 1,268,404.97 and 511,240.31 is: 705,501.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,147.25 : 1,268,404.97 = 511,240.31 : x
  2. Step 2: Convert to fraction form
    919,147.25/1,268,404.97 = 511,240.31/x
  3. Step 3: Cross multiply
    919,147.25x = 1,268,404.97 × 511,240.31
  4. Step 4: Simplify right side
    919,147.25x = 648,459,748,802.36
  5. Step 5: Solve for x
    x = 648,459,748,802.36/919,147.25
  6. Step 6: Final answer
    x = 705,501.49

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Double scale
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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.