Home / 716,052.15-987,910.11-405,921.47

Finding the Fourth Proportional to 716,052.15, 987,910.11 and 405,921.47

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Solution

The fourth proportional to 716,052.15, 987,910.11 and 405,921.47 is: 560,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,052.15 : 987,910.11 = 405,921.47 : x
  2. Step 2: Convert to fraction form
    716,052.15/987,910.11 = 405,921.47/x
  3. Step 3: Cross multiply
    716,052.15x = 987,910.11 × 405,921.47
  4. Step 4: Simplify right side
    716,052.15x = 401,013,919,139.51
  5. Step 5: Solve for x
    x = 401,013,919,139.51/716,052.15
  6. Step 6: Final answer
    x = 560,034.52

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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.