Home / 621,880.39-931,325.75-354,831.28

Finding the Fourth Proportional to 621,880.39, 931,325.75 and 354,831.28

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Solution

The fourth proportional to 621,880.39, 931,325.75 and 354,831.28 is: 531,394.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,880.39 : 931,325.75 = 354,831.28 : x
  2. Step 2: Convert to fraction form
    621,880.39/931,325.75 = 354,831.28/x
  3. Step 3: Cross multiply
    621,880.39x = 931,325.75 × 354,831.28
  4. Step 4: Simplify right side
    621,880.39x = 330,463,510,436.31
  5. Step 5: Solve for x
    x = 330,463,510,436.31/621,880.39
  6. Step 6: Final answer
    x = 531,394.01

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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.