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Finding the Fourth Proportional to 926,648, 1,278,765.60 and 524,240

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Solution

The fourth proportional to 926,648, 1,278,765.60 and 524,240 is: 723,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,648 : 1,278,765.60 = 524,240 : x
  2. Step 2: Convert to fraction form
    926,648/1,278,765.60 = 524,240/x
  3. Step 3: Cross multiply
    926,648x = 1,278,765.60 × 524,240
  4. Step 4: Simplify right side
    926,648x = 670,380,078,144
  5. Step 5: Solve for x
    x = 670,380,078,144/926,648
  6. Step 6: Final answer
    x = 723,446.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.