Home / 991,512.40-1,367,783.39-647,549.58

Finding the Fourth Proportional to 991,512.40, 1,367,783.39 and 647,549.58

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Solution

The fourth proportional to 991,512.40, 1,367,783.39 and 647,549.58 is: 893,289.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,512.40 : 1,367,783.39 = 647,549.58 : x
  2. Step 2: Convert to fraction form
    991,512.40/1,367,783.39 = 647,549.58/x
  3. Step 3: Cross multiply
    991,512.40x = 1,367,783.39 × 647,549.58
  4. Step 4: Simplify right side
    991,512.40x = 885,707,549,648.81
  5. Step 5: Solve for x
    x = 885,707,549,648.81/991,512.40
  6. Step 6: Final answer
    x = 893,289.44

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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.