Home / 1,392,274.76-1,921,221.77-772,097.72

Finding the Fourth Proportional to 1,392,274.76, 1,921,221.77 and 772,097.72

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Solution

The fourth proportional to 1,392,274.76, 1,921,221.77 and 772,097.72 is: 1,065,429.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,274.76 : 1,921,221.77 = 772,097.72 : x
  2. Step 2: Convert to fraction form
    1,392,274.76/1,921,221.77 = 772,097.72/x
  3. Step 3: Cross multiply
    1,392,274.76x = 1,921,221.77 × 772,097.72
  4. Step 4: Simplify right side
    1,392,274.76x = 1,483,370,934,764.77
  5. Step 5: Solve for x
    x = 1,483,370,934,764.77/1,392,274.76
  6. Step 6: Final answer
    x = 1,065,429.74

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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.