Home / 1,392,500.32-1,921,643.76-788,886.88

Finding the Fourth Proportional to 1,392,500.32, 1,921,643.76 and 788,886.88

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Solution

The fourth proportional to 1,392,500.32, 1,921,643.76 and 788,886.88 is: 1,088,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,500.32 : 1,921,643.76 = 788,886.88 : x
  2. Step 2: Convert to fraction form
    1,392,500.32/1,921,643.76 = 788,886.88/x
  3. Step 3: Cross multiply
    1,392,500.32x = 1,921,643.76 × 788,886.88
  4. Step 4: Simplify right side
    1,392,500.32x = 1,515,959,550,297.87
  5. Step 5: Solve for x
    x = 1,515,959,550,297.87/1,392,500.32
  6. Step 6: Final answer
    x = 1,088,660.11

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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.