Home / 991,570.41-1,368,338.67-561,989.34

Finding the Fourth Proportional to 991,570.41, 1,368,338.67 and 561,989.34

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Solution

The fourth proportional to 991,570.41, 1,368,338.67 and 561,989.34 is: 775,529.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,570.41 : 1,368,338.67 = 561,989.34 : x
  2. Step 2: Convert to fraction form
    991,570.41/1,368,338.67 = 561,989.34/x
  3. Step 3: Cross multiply
    991,570.41x = 1,368,338.67 × 561,989.34
  4. Step 4: Simplify right side
    991,570.41x = 768,991,746,049.78
  5. Step 5: Solve for x
    x = 768,991,746,049.78/991,570.41
  6. Step 6: Final answer
    x = 775,529.14

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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.