Home / 621,064.40-856,820.04-391,546.16

Finding the Fourth Proportional to 621,064.40, 856,820.04 and 391,546.16

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Solution

The fourth proportional to 621,064.40, 856,820.04 and 391,546.16 is: 540,176.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,064.40 : 856,820.04 = 391,546.16 : x
  2. Step 2: Convert to fraction form
    621,064.40/856,820.04 = 391,546.16/x
  3. Step 3: Cross multiply
    621,064.40x = 856,820.04 × 391,546.16
  4. Step 4: Simplify right side
    621,064.40x = 335,484,596,473.05
  5. Step 5: Solve for x
    x = 335,484,596,473.05/621,064.40
  6. Step 6: Final answer
    x = 540,176.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.