Home / 716,237.89-988,408.80-393,972.51

Finding the Fourth Proportional to 716,237.89, 988,408.80 and 393,972.51

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Solution

The fourth proportional to 716,237.89, 988,408.80 and 393,972.51 is: 543,682.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,237.89 : 988,408.80 = 393,972.51 : x
  2. Step 2: Convert to fraction form
    716,237.89/988,408.80 = 393,972.51/x
  3. Step 3: Cross multiply
    716,237.89x = 988,408.80 × 393,972.51
  4. Step 4: Simplify right side
    716,237.89x = 389,405,895,096.87
  5. Step 5: Solve for x
    x = 389,405,895,096.87/716,237.89
  6. Step 6: Final answer
    x = 543,682.34

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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.