Home / 386,474.40-579,711.60-186,890.40

Finding the Fourth Proportional to 386,474.40, 579,711.60 and 186,890.40

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Solution

The fourth proportional to 386,474.40, 579,711.60 and 186,890.40 is: 280,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,474.40 : 579,711.60 = 186,890.40 : x
  2. Step 2: Convert to fraction form
    386,474.40/579,711.60 = 186,890.40/x
  3. Step 3: Cross multiply
    386,474.40x = 579,711.60 × 186,890.40
  4. Step 4: Simplify right side
    386,474.40x = 108,342,532,808.64
  5. Step 5: Solve for x
    x = 108,342,532,808.64/386,474.40
  6. Step 6: Final answer
    x = 280,335.60

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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.