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Finding the Fourth Proportional to 928,818, 1,393,244.28 and 263,987.28

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Solution

The fourth proportional to 928,818, 1,393,244.28 and 263,987.28 is: 395,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,818 : 1,393,244.28 = 263,987.28 : x
  2. Step 2: Convert to fraction form
    928,818/1,393,244.28 = 263,987.28/x
  3. Step 3: Cross multiply
    928,818x = 1,393,244.28 × 263,987.28
  4. Step 4: Simplify right side
    928,818x = 367,798,767,852.76
  5. Step 5: Solve for x
    x = 367,798,767,852.76/928,818
  6. Step 6: Final answer
    x = 395,985.83

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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.