Home / 991,577.79-1,367,873.73-647,615.07

Finding the Fourth Proportional to 991,577.79, 1,367,873.73 and 647,615.07

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Solution

The fourth proportional to 991,577.79, 1,367,873.73 and 647,615.07 is: 893,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,577.79 : 1,367,873.73 = 647,615.07 : x
  2. Step 2: Convert to fraction form
    991,577.79/1,367,873.73 = 647,615.07/x
  3. Step 3: Cross multiply
    991,577.79x = 1,367,873.73 × 647,615.07
  4. Step 4: Simplify right side
    991,577.79x = 885,855,641,405.11
  5. Step 5: Solve for x
    x = 885,855,641,405.11/991,577.79
  6. Step 6: Final answer
    x = 893,379.87

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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.