Home / 1,138,837.32-1,571,835.78-947,664.36

Finding the Fourth Proportional to 1,138,837.32, 1,571,835.78 and 947,664.36

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Solution

The fourth proportional to 1,138,837.32, 1,571,835.78 and 947,664.36 is: 1,307,976.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,837.32 : 1,571,835.78 = 947,664.36 : x
  2. Step 2: Convert to fraction form
    1,138,837.32/1,571,835.78 = 947,664.36/x
  3. Step 3: Cross multiply
    1,138,837.32x = 1,571,835.78 × 947,664.36
  4. Step 4: Simplify right side
    1,138,837.32x = 1,489,572,748,478.80
  5. Step 5: Solve for x
    x = 1,489,572,748,478.80/1,138,837.32
  6. Step 6: Final answer
    x = 1,307,976.76

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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.