Home / 991,513.40-1,367,784.76-647,550.58

Finding the Fourth Proportional to 991,513.40, 1,367,784.76 and 647,550.58

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Solution

The fourth proportional to 991,513.40, 1,367,784.76 and 647,550.58 is: 893,290.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,513.40 : 1,367,784.76 = 647,550.58 : x
  2. Step 2: Convert to fraction form
    991,513.40/1,367,784.76 = 647,550.58/x
  3. Step 3: Cross multiply
    991,513.40x = 1,367,784.76 × 647,550.58
  4. Step 4: Simplify right side
    991,513.40x = 885,709,814,653.16
  5. Step 5: Solve for x
    x = 885,709,814,653.16/991,513.40
  6. Step 6: Final answer
    x = 893,290.82

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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.