Home / 991,586.43-1,367,885.59-647,623.87

Finding the Fourth Proportional to 991,586.43, 1,367,885.59 and 647,623.87

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Solution

The fourth proportional to 991,586.43, 1,367,885.59 and 647,623.87 is: 893,391.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,586.43 : 1,367,885.59 = 647,623.87 : x
  2. Step 2: Convert to fraction form
    991,586.43/1,367,885.59 = 647,623.87/x
  3. Step 3: Cross multiply
    991,586.43x = 1,367,885.59 × 647,623.87
  4. Step 4: Simplify right side
    991,586.43x = 885,875,354,474.26
  5. Step 5: Solve for x
    x = 885,875,354,474.26/991,586.43
  6. Step 6: Final answer
    x = 893,391.97

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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.