Home / 687,684.39-1,031,750.70-345,951.46

Finding the Fourth Proportional to 687,684.39, 1,031,750.70 and 345,951.46

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Solution

The fourth proportional to 687,684.39, 1,031,750.70 and 345,951.46 is: 519,039.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,684.39 : 1,031,750.70 = 345,951.46 : x
  2. Step 2: Convert to fraction form
    687,684.39/1,031,750.70 = 345,951.46/x
  3. Step 3: Cross multiply
    687,684.39x = 1,031,750.70 × 345,951.46
  4. Step 4: Simplify right side
    687,684.39x = 356,935,661,021.02
  5. Step 5: Solve for x
    x = 356,935,661,021.02/687,684.39
  6. Step 6: Final answer
    x = 519,039.93

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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.