Home / 1,381,856.80-2,072,785.20-980,323.60

Finding the Fourth Proportional to 1,381,856.80, 2,072,785.20 and 980,323.60

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Solution

The fourth proportional to 1,381,856.80, 2,072,785.20 and 980,323.60 is: 1,470,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,856.80 : 2,072,785.20 = 980,323.60 : x
  2. Step 2: Convert to fraction form
    1,381,856.80/2,072,785.20 = 980,323.60/x
  3. Step 3: Cross multiply
    1,381,856.80x = 2,072,785.20 × 980,323.60
  4. Step 4: Simplify right side
    1,381,856.80x = 2,032,000,249,290.72
  5. Step 5: Solve for x
    x = 2,032,000,249,290.72/1,381,856.80
  6. Step 6: Final answer
    x = 1,470,485.40

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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.