Home / 716,240.74-988,412.73-393,975.36

Finding the Fourth Proportional to 716,240.74, 988,412.73 and 393,975.36

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Solution

The fourth proportional to 716,240.74, 988,412.73 and 393,975.36 is: 543,686.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,240.74 : 988,412.73 = 393,975.36 : x
  2. Step 2: Convert to fraction form
    716,240.74/988,412.73 = 393,975.36/x
  3. Step 3: Cross multiply
    716,240.74x = 988,412.73 × 393,975.36
  4. Step 4: Simplify right side
    716,240.74x = 389,410,258,659.30
  5. Step 5: Solve for x
    x = 389,410,258,659.30/716,240.74
  6. Step 6: Final answer
    x = 543,686.27

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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.