Home / 621,027.40-931,541.10-306,099.40

Finding the Fourth Proportional to 621,027.40, 931,541.10 and 306,099.40

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Solution

The fourth proportional to 621,027.40, 931,541.10 and 306,099.40 is: 459,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,027.40 : 931,541.10 = 306,099.40 : x
  2. Step 2: Convert to fraction form
    621,027.40/931,541.10 = 306,099.40/x
  3. Step 3: Cross multiply
    621,027.40x = 931,541.10 × 306,099.40
  4. Step 4: Simplify right side
    621,027.40x = 285,144,171,785.34
  5. Step 5: Solve for x
    x = 285,144,171,785.34/621,027.40
  6. Step 6: Final answer
    x = 459,149.10

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Half scale
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Double scale
Find fourth proportional to 621,028.40, 931,542.60 and 306,100.40
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.