Home / 631,402.38-947,111.78-210,678.26

Finding the Fourth Proportional to 631,402.38, 947,111.78 and 210,678.26

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Solution

The fourth proportional to 631,402.38, 947,111.78 and 210,678.26 is: 316,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,402.38 : 947,111.78 = 210,678.26 : x
  2. Step 2: Convert to fraction form
    631,402.38/947,111.78 = 210,678.26/x
  3. Step 3: Cross multiply
    631,402.38x = 947,111.78 × 210,678.26
  4. Step 4: Simplify right side
    631,402.38x = 199,535,856,046.95
  5. Step 5: Solve for x
    x = 199,535,856,046.95/631,402.38
  6. Step 6: Final answer
    x = 316,020.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.