Home / 991,255.80-1,367,942.64-561,526.74

Finding the Fourth Proportional to 991,255.80, 1,367,942.64 and 561,526.74

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Solution

The fourth proportional to 991,255.80, 1,367,942.64 and 561,526.74 is: 774,912.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,255.80 : 1,367,942.64 = 561,526.74 : x
  2. Step 2: Convert to fraction form
    991,255.80/1,367,942.64 = 561,526.74/x
  3. Step 3: Cross multiply
    991,255.80x = 1,367,942.64 × 561,526.74
  4. Step 4: Simplify right side
    991,255.80x = 768,136,371,146.19
  5. Step 5: Solve for x
    x = 768,136,371,146.19/991,255.80
  6. Step 6: Final answer
    x = 774,912.36

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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.