Home / 991,312.31-1,368,078.64-561,595.97

Finding the Fourth Proportional to 991,312.31, 1,368,078.64 and 561,595.97

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Solution

The fourth proportional to 991,312.31, 1,368,078.64 and 561,595.97 is: 775,040.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,312.31 : 1,368,078.64 = 561,595.97 : x
  2. Step 2: Convert to fraction form
    991,312.31/1,368,078.64 = 561,595.97/x
  3. Step 3: Cross multiply
    991,312.31x = 1,368,078.64 × 561,595.97
  4. Step 4: Simplify right side
    991,312.31x = 768,307,448,346.82
  5. Step 5: Solve for x
    x = 768,307,448,346.82/991,312.31
  6. Step 6: Final answer
    x = 775,040.76

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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.