Home / 579,712.80-869,569.20-342,933.60

Finding the Fourth Proportional to 579,712.80, 869,569.20 and 342,933.60

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Solution

The fourth proportional to 579,712.80, 869,569.20 and 342,933.60 is: 514,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,712.80 : 869,569.20 = 342,933.60 : x
  2. Step 2: Convert to fraction form
    579,712.80/869,569.20 = 342,933.60/x
  3. Step 3: Cross multiply
    579,712.80x = 869,569.20 × 342,933.60
  4. Step 4: Simplify right side
    579,712.80x = 298,204,496,205.12
  5. Step 5: Solve for x
    x = 298,204,496,205.12/579,712.80
  6. Step 6: Final answer
    x = 514,400.40

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Double scale
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Similar ratio
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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.