Home / 910,628.03-1,256,831.18-543,128.76

Finding the Fourth Proportional to 910,628.03, 1,256,831.18 and 543,128.76

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Solution

The fourth proportional to 910,628.03, 1,256,831.18 and 543,128.76 is: 749,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,628.03 : 1,256,831.18 = 543,128.76 : x
  2. Step 2: Convert to fraction form
    910,628.03/1,256,831.18 = 543,128.76/x
  3. Step 3: Cross multiply
    910,628.03x = 1,256,831.18 × 543,128.76
  4. Step 4: Simplify right side
    910,628.03x = 682,621,157,607.09
  5. Step 5: Solve for x
    x = 682,621,157,607.09/910,628.03
  6. Step 6: Final answer
    x = 749,615.80

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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.