Home / 1,361,856.80-2,042,785.20-690,010.40

Finding the Fourth Proportional to 1,361,856.80, 2,042,785.20 and 690,010.40

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Solution

The fourth proportional to 1,361,856.80, 2,042,785.20 and 690,010.40 is: 1,035,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,856.80 : 2,042,785.20 = 690,010.40 : x
  2. Step 2: Convert to fraction form
    1,361,856.80/2,042,785.20 = 690,010.40/x
  3. Step 3: Cross multiply
    1,361,856.80x = 2,042,785.20 × 690,010.40
  4. Step 4: Simplify right side
    1,361,856.80x = 1,409,543,032,966.08
  5. Step 5: Solve for x
    x = 1,409,543,032,966.08/1,361,856.80
  6. Step 6: Final answer
    x = 1,035,015.60

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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.