Home / 1,247,785.20-1,871,677.80-1,237,287.60

Finding the Fourth Proportional to 1,247,785.20, 1,871,677.80 and 1,237,287.60

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Solution

The fourth proportional to 1,247,785.20, 1,871,677.80 and 1,237,287.60 is: 1,855,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,785.20 : 1,871,677.80 = 1,237,287.60 : x
  2. Step 2: Convert to fraction form
    1,247,785.20/1,871,677.80 = 1,237,287.60/x
  3. Step 3: Cross multiply
    1,247,785.20x = 1,871,677.80 × 1,237,287.60
  4. Step 4: Simplify right side
    1,247,785.20x = 2,315,803,733,135.28
  5. Step 5: Solve for x
    x = 2,315,803,733,135.28/1,247,785.20
  6. Step 6: Final answer
    x = 1,855,931.40

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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.