Home / 991,584.79-1,367,883.36-647,622.25

Finding the Fourth Proportional to 991,584.79, 1,367,883.36 and 647,622.25

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Solution

The fourth proportional to 991,584.79, 1,367,883.36 and 647,622.25 is: 893,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,584.79 : 1,367,883.36 = 647,622.25 : x
  2. Step 2: Convert to fraction form
    991,584.79/1,367,883.36 = 647,622.25/x
  3. Step 3: Cross multiply
    991,584.79x = 1,367,883.36 × 647,622.25
  4. Step 4: Simplify right side
    991,584.79x = 885,871,699,340.76
  5. Step 5: Solve for x
    x = 885,871,699,340.76/991,584.79
  6. Step 6: Final answer
    x = 893,389.76

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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.