Home / 1,392,501.32-1,921,645.14-788,887.88

Finding the Fourth Proportional to 1,392,501.32, 1,921,645.14 and 788,887.88

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Solution

The fourth proportional to 1,392,501.32, 1,921,645.14 and 788,887.88 is: 1,088,661.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,501.32 : 1,921,645.14 = 788,887.88 : x
  2. Step 2: Convert to fraction form
    1,392,501.32/1,921,645.14 = 788,887.88/x
  3. Step 3: Cross multiply
    1,392,501.32x = 1,921,645.14 × 788,887.88
  4. Step 4: Simplify right side
    1,392,501.32x = 1,515,962,560,606.90
  5. Step 5: Solve for x
    x = 1,515,962,560,606.90/1,392,501.32
  6. Step 6: Final answer
    x = 1,088,661.49

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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.