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Finding the Fourth Proportional to 493,692.48, 680,659.20 and 402,955.20

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Solution

The fourth proportional to 493,692.48, 680,659.20 and 402,955.20 is: 555,558.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,692.48 : 680,659.20 = 402,955.20 : x
  2. Step 2: Convert to fraction form
    493,692.48/680,659.20 = 402,955.20/x
  3. Step 3: Cross multiply
    493,692.48x = 680,659.20 × 402,955.20
  4. Step 4: Simplify right side
    493,692.48x = 274,275,164,067.84
  5. Step 5: Solve for x
    x = 274,275,164,067.84/493,692.48
  6. Step 6: Final answer
    x = 555,558.72

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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.