Home / 853,505.07-1,280,322.95-254,420.43

Finding the Fourth Proportional to 853,505.07, 1,280,322.95 and 254,420.43

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Solution

The fourth proportional to 853,505.07, 1,280,322.95 and 254,420.43 is: 381,650.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,505.07 : 1,280,322.95 = 254,420.43 : x
  2. Step 2: Convert to fraction form
    853,505.07/1,280,322.95 = 254,420.43/x
  3. Step 3: Cross multiply
    853,505.07x = 1,280,322.95 × 254,420.43
  4. Step 4: Simplify right side
    853,505.07x = 325,740,314,205.77
  5. Step 5: Solve for x
    x = 325,740,314,205.77/853,505.07
  6. Step 6: Final answer
    x = 381,650.12

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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.