Home / 1,280,199.77-1,919,877.54-427,036.32

Finding the Fourth Proportional to 1,280,199.77, 1,919,877.54 and 427,036.32

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Solution

The fourth proportional to 1,280,199.77, 1,919,877.54 and 427,036.32 is: 640,413.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,199.77 : 1,919,877.54 = 427,036.32 : x
  2. Step 2: Convert to fraction form
    1,280,199.77/1,919,877.54 = 427,036.32/x
  3. Step 3: Cross multiply
    1,280,199.77x = 1,919,877.54 × 427,036.32
  4. Step 4: Simplify right side
    1,280,199.77x = 819,857,439,532.25
  5. Step 5: Solve for x
    x = 819,857,439,532.25/1,280,199.77
  6. Step 6: Final answer
    x = 640,413.68

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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.