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Finding the Fourth Proportional to 710,889.28, 981,094.26 and 388,646.96

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Solution

The fourth proportional to 710,889.28, 981,094.26 and 388,646.96 is: 536,369.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,889.28 : 981,094.26 = 388,646.96 : x
  2. Step 2: Convert to fraction form
    710,889.28/981,094.26 = 388,646.96/x
  3. Step 3: Cross multiply
    710,889.28x = 981,094.26 × 388,646.96
  4. Step 4: Simplify right side
    710,889.28x = 381,299,301,622.45
  5. Step 5: Solve for x
    x = 381,299,301,622.45/710,889.28
  6. Step 6: Final answer
    x = 536,369.46

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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.