Home / 872,305.83-1,307,923.07-339,205.41

Finding the Fourth Proportional to 872,305.83, 1,307,923.07 and 339,205.41

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Solution

The fourth proportional to 872,305.83, 1,307,923.07 and 339,205.41 is: 508,599.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,305.83 : 1,307,923.07 = 339,205.41 : x
  2. Step 2: Convert to fraction form
    872,305.83/1,307,923.07 = 339,205.41/x
  3. Step 3: Cross multiply
    872,305.83x = 1,307,923.07 × 339,205.41
  4. Step 4: Simplify right side
    872,305.83x = 443,654,579,511.78
  5. Step 5: Solve for x
    x = 443,654,579,511.78/872,305.83
  6. Step 6: Final answer
    x = 508,599.81

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1.5x scale

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.