Home / 638,400.20-957,600.30-524,238.80

Finding the Fourth Proportional to 638,400.20, 957,600.30 and 524,238.80

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Solution

The fourth proportional to 638,400.20, 957,600.30 and 524,238.80 is: 786,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,400.20 : 957,600.30 = 524,238.80 : x
  2. Step 2: Convert to fraction form
    638,400.20/957,600.30 = 524,238.80/x
  3. Step 3: Cross multiply
    638,400.20x = 957,600.30 × 524,238.80
  4. Step 4: Simplify right side
    638,400.20x = 502,011,232,151.64
  5. Step 5: Solve for x
    x = 502,011,232,151.64/638,400.20
  6. Step 6: Final answer
    x = 786,358.20

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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.