Home / 621,872.51-931,313.93-354,823.40

Finding the Fourth Proportional to 621,872.51, 931,313.93 and 354,823.40

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Solution

The fourth proportional to 621,872.51, 931,313.93 and 354,823.40 is: 531,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,872.51 : 931,313.93 = 354,823.40 : x
  2. Step 2: Convert to fraction form
    621,872.51/931,313.93 = 354,823.40/x
  3. Step 3: Cross multiply
    621,872.51x = 931,313.93 × 354,823.40
  4. Step 4: Simplify right side
    621,872.51x = 330,451,975,664.13
  5. Step 5: Solve for x
    x = 330,451,975,664.13/621,872.51
  6. Step 6: Final answer
    x = 531,382.19

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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.