Home / 991,424.68-1,368,162.70-561,786.71

Finding the Fourth Proportional to 991,424.68, 1,368,162.70 and 561,786.71

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Solution

The fourth proportional to 991,424.68, 1,368,162.70 and 561,786.71 is: 775,263.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,424.68 : 1,368,162.70 = 561,786.71 : x
  2. Step 2: Convert to fraction form
    991,424.68/1,368,162.70 = 561,786.71/x
  3. Step 3: Cross multiply
    991,424.68x = 1,368,162.70 × 561,786.71
  4. Step 4: Simplify right side
    991,424.68x = 768,615,621,977.72
  5. Step 5: Solve for x
    x = 768,615,621,977.72/991,424.68
  6. Step 6: Final answer
    x = 775,263.76

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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.