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Finding the Fourth Proportional to 620,967.67, 931,481.58 and 171,678.59

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Solution

The fourth proportional to 620,967.67, 931,481.58 and 171,678.59 is: 257,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,967.67 : 931,481.58 = 171,678.59 : x
  2. Step 2: Convert to fraction form
    620,967.67/931,481.58 = 171,678.59/x
  3. Step 3: Cross multiply
    620,967.67x = 931,481.58 × 171,678.59
  4. Step 4: Simplify right side
    620,967.67x = 159,915,443,406.98
  5. Step 5: Solve for x
    x = 159,915,443,406.98/620,967.67
  6. Step 6: Final answer
    x = 257,526.20

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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.