Home / 1,280,256.36-1,920,482.54-381,629.40

Finding the Fourth Proportional to 1,280,256.36, 1,920,482.54 and 381,629.40

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Solution

The fourth proportional to 1,280,256.36, 1,920,482.54 and 381,629.40 is: 572,473.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,256.36 : 1,920,482.54 = 381,629.40 : x
  2. Step 2: Convert to fraction form
    1,280,256.36/1,920,482.54 = 381,629.40/x
  3. Step 3: Cross multiply
    1,280,256.36x = 1,920,482.54 × 381,629.40
  4. Step 4: Simplify right side
    1,280,256.36x = 732,912,599,450.68
  5. Step 5: Solve for x
    x = 732,912,599,450.68/1,280,256.36
  6. Step 6: Final answer
    x = 572,473.31

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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.