Home / 527,219.20-790,828.80-386,214.40

Finding the Fourth Proportional to 527,219.20, 790,828.80 and 386,214.40

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Solution

The fourth proportional to 527,219.20, 790,828.80 and 386,214.40 is: 579,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,219.20 : 790,828.80 = 386,214.40 : x
  2. Step 2: Convert to fraction form
    527,219.20/790,828.80 = 386,214.40/x
  3. Step 3: Cross multiply
    527,219.20x = 790,828.80 × 386,214.40
  4. Step 4: Simplify right side
    527,219.20x = 305,429,470,494.72
  5. Step 5: Solve for x
    x = 305,429,470,494.72/527,219.20
  6. Step 6: Final answer
    x = 579,321.60

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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.