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Finding the Fourth Proportional to 579,530.80, 869,728.20 and 298,903.60

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Solution

The fourth proportional to 579,530.80, 869,728.20 and 298,903.60 is: 448,578.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,530.80 : 869,728.20 = 298,903.60 : x
  2. Step 2: Convert to fraction form
    579,530.80/869,728.20 = 298,903.60/x
  3. Step 3: Cross multiply
    579,530.80x = 869,728.20 × 298,903.60
  4. Step 4: Simplify right side
    579,530.80x = 259,964,890,001.52
  5. Step 5: Solve for x
    x = 259,964,890,001.52/579,530.80
  6. Step 6: Final answer
    x = 448,578.21

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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.