Home / 1,279,013.63-1,918,520.55-380,468.28

Finding the Fourth Proportional to 1,279,013.63, 1,918,520.55 and 380,468.28

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Solution

The fourth proportional to 1,279,013.63, 1,918,520.55 and 380,468.28 is: 570,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,013.63 : 1,918,520.55 = 380,468.28 : x
  2. Step 2: Convert to fraction form
    1,279,013.63/1,918,520.55 = 380,468.28/x
  3. Step 3: Cross multiply
    1,279,013.63x = 1,918,520.55 × 380,468.28
  4. Step 4: Simplify right side
    1,279,013.63x = 729,936,213,803.15
  5. Step 5: Solve for x
    x = 729,936,213,803.15/1,279,013.63
  6. Step 6: Final answer
    x = 570,702.45

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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.