Home / 939,628.83-1,296,688.62-509,908.96

Finding the Fourth Proportional to 939,628.83, 1,296,688.62 and 509,908.96

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Solution

The fourth proportional to 939,628.83, 1,296,688.62 and 509,908.96 is: 703,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,628.83 : 1,296,688.62 = 509,908.96 : x
  2. Step 2: Convert to fraction form
    939,628.83/1,296,688.62 = 509,908.96/x
  3. Step 3: Cross multiply
    939,628.83x = 1,296,688.62 × 509,908.96
  4. Step 4: Simplify right side
    939,628.83x = 661,193,143,971.55
  5. Step 5: Solve for x
    x = 661,193,143,971.55/939,628.83
  6. Step 6: Final answer
    x = 703,674.82

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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.