Home / 1,242,024.80-1,863,037.20-840,491.60

Finding the Fourth Proportional to 1,242,024.80, 1,863,037.20 and 840,491.60

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Solution

The fourth proportional to 1,242,024.80, 1,863,037.20 and 840,491.60 is: 1,260,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,024.80 : 1,863,037.20 = 840,491.60 : x
  2. Step 2: Convert to fraction form
    1,242,024.80/1,863,037.20 = 840,491.60/x
  3. Step 3: Cross multiply
    1,242,024.80x = 1,863,037.20 × 840,491.60
  4. Step 4: Simplify right side
    1,242,024.80x = 1,565,867,117,087.52
  5. Step 5: Solve for x
    x = 1,565,867,117,087.52/1,242,024.80
  6. Step 6: Final answer
    x = 1,260,737.40

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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.