Home / 991,013.40-1,367,790.28-646,250.80

Finding the Fourth Proportional to 991,013.40, 1,367,790.28 and 646,250.80

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Solution

The fourth proportional to 991,013.40, 1,367,790.28 and 646,250.80 is: 891,951.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,013.40 : 1,367,790.28 = 646,250.80 : x
  2. Step 2: Convert to fraction form
    991,013.40/1,367,790.28 = 646,250.80/x
  3. Step 3: Cross multiply
    991,013.40x = 1,367,790.28 × 646,250.80
  4. Step 4: Simplify right side
    991,013.40x = 883,935,562,682.22
  5. Step 5: Solve for x
    x = 883,935,562,682.22/991,013.40
  6. Step 6: Final answer
    x = 891,951.17

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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.