Home / 621,008.20-931,512.30-603,512.20

Finding the Fourth Proportional to 621,008.20, 931,512.30 and 603,512.20

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Solution

The fourth proportional to 621,008.20, 931,512.30 and 603,512.20 is: 905,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,008.20 : 931,512.30 = 603,512.20 : x
  2. Step 2: Convert to fraction form
    621,008.20/931,512.30 = 603,512.20/x
  3. Step 3: Cross multiply
    621,008.20x = 931,512.30 × 603,512.20
  4. Step 4: Simplify right side
    621,008.20x = 562,179,037,500.06
  5. Step 5: Solve for x
    x = 562,179,037,500.06/621,008.20
  6. Step 6: Final answer
    x = 905,268.30

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Half scale
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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.