Home / 621,647.19-931,236.21-478,997.55

Finding the Fourth Proportional to 621,647.19, 931,236.21 and 478,997.55

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Solution

The fourth proportional to 621,647.19, 931,236.21 and 478,997.55 is: 717,545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,647.19 : 931,236.21 = 478,997.55 : x
  2. Step 2: Convert to fraction form
    621,647.19/931,236.21 = 478,997.55/x
  3. Step 3: Cross multiply
    621,647.19x = 931,236.21 × 478,997.55
  4. Step 4: Simplify right side
    621,647.19x = 446,059,863,061.29
  5. Step 5: Solve for x
    x = 446,059,863,061.29/621,647.19
  6. Step 6: Final answer
    x = 717,545.05

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Double scale
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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.