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Finding the Fourth Proportional to 553,333.20, 829,999.80 and 313,200.60

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Solution

The fourth proportional to 553,333.20, 829,999.80 and 313,200.60 is: 469,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,333.20 : 829,999.80 = 313,200.60 : x
  2. Step 2: Convert to fraction form
    553,333.20/829,999.80 = 313,200.60/x
  3. Step 3: Cross multiply
    553,333.20x = 829,999.80 × 313,200.60
  4. Step 4: Simplify right side
    553,333.20x = 259,956,435,359.88
  5. Step 5: Solve for x
    x = 259,956,435,359.88/553,333.20
  6. Step 6: Final answer
    x = 469,800.90

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1.5x scale

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.