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Finding the Fourth Proportional to 579,969.60, 869,911.20 and 242,923.20

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Solution

The fourth proportional to 579,969.60, 869,911.20 and 242,923.20 is: 364,366.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,969.60 : 869,911.20 = 242,923.20 : x
  2. Step 2: Convert to fraction form
    579,969.60/869,911.20 = 242,923.20/x
  3. Step 3: Cross multiply
    579,969.60x = 869,911.20 × 242,923.20
  4. Step 4: Simplify right side
    579,969.60x = 211,321,612,419.84
  5. Step 5: Solve for x
    x = 211,321,612,419.84/579,969.60
  6. Step 6: Final answer
    x = 364,366.71

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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.