Home / 1,145,407.70-1,716,981.60-640,210.70

Finding the Fourth Proportional to 1,145,407.70, 1,716,981.60 and 640,210.70

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Solution

The fourth proportional to 1,145,407.70, 1,716,981.60 and 640,210.70 is: 959,684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,407.70 : 1,716,981.60 = 640,210.70 : x
  2. Step 2: Convert to fraction form
    1,145,407.70/1,716,981.60 = 640,210.70/x
  3. Step 3: Cross multiply
    1,145,407.70x = 1,716,981.60 × 640,210.70
  4. Step 4: Simplify right side
    1,145,407.70x = 1,099,229,992,023.12
  5. Step 5: Solve for x
    x = 1,099,229,992,023.12/1,145,407.70
  6. Step 6: Final answer
    x = 959,684.48

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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.