Home / 716,112.09-988,214.96-393,822.16

Finding the Fourth Proportional to 716,112.09, 988,214.96 and 393,822.16

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Solution

The fourth proportional to 716,112.09, 988,214.96 and 393,822.16 is: 543,463.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,112.09 : 988,214.96 = 393,822.16 : x
  2. Step 2: Convert to fraction form
    716,112.09/988,214.96 = 393,822.16/x
  3. Step 3: Cross multiply
    716,112.09x = 988,214.96 × 393,822.16
  4. Step 4: Simplify right side
    716,112.09x = 389,180,950,091.51
  5. Step 5: Solve for x
    x = 389,180,950,091.51/716,112.09
  6. Step 6: Final answer
    x = 543,463.73

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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.