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Finding the Fourth Proportional to 636,759.20, 878,852.64 and 365,009.28

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Solution

The fourth proportional to 636,759.20, 878,852.64 and 365,009.28 is: 503,784.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,759.20 : 878,852.64 = 365,009.28 : x
  2. Step 2: Convert to fraction form
    636,759.20/878,852.64 = 365,009.28/x
  3. Step 3: Cross multiply
    636,759.20x = 878,852.64 × 365,009.28
  4. Step 4: Simplify right side
    636,759.20x = 320,789,369,352.50
  5. Step 5: Solve for x
    x = 320,789,369,352.50/636,759.20
  6. Step 6: Final answer
    x = 503,784.43

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1.5x scale

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.