Home / 716,001.36-988,098.12-393,729.36

Finding the Fourth Proportional to 716,001.36, 988,098.12 and 393,729.36

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Solution

The fourth proportional to 716,001.36, 988,098.12 and 393,729.36 is: 543,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,001.36 : 988,098.12 = 393,729.36 : x
  2. Step 2: Convert to fraction form
    716,001.36/988,098.12 = 393,729.36/x
  3. Step 3: Cross multiply
    716,001.36x = 988,098.12 × 393,729.36
  4. Step 4: Simplify right side
    716,001.36x = 389,043,240,404.80
  5. Step 5: Solve for x
    x = 389,043,240,404.80/716,001.36
  6. Step 6: Final answer
    x = 543,355.45

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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.