Home / 817,171.98-1,127,733.72-680,977.92

Finding the Fourth Proportional to 817,171.98, 1,127,733.72 and 680,977.92

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Solution

The fourth proportional to 817,171.98, 1,127,733.72 and 680,977.92 is: 939,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,171.98 : 1,127,733.72 = 680,977.92 : x
  2. Step 2: Convert to fraction form
    817,171.98/1,127,733.72 = 680,977.92/x
  3. Step 3: Cross multiply
    817,171.98x = 1,127,733.72 × 680,977.92
  4. Step 4: Simplify right side
    817,171.98x = 767,961,762,959.46
  5. Step 5: Solve for x
    x = 767,961,762,959.46/817,171.98
  6. Step 6: Final answer
    x = 939,779.85

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1.5x scale

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.