Home / 828,138.80-1,241,430.60-648,124.40

Finding the Fourth Proportional to 828,138.80, 1,241,430.60 and 648,124.40

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Solution

The fourth proportional to 828,138.80, 1,241,430.60 and 648,124.40 is: 971,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,138.80 : 1,241,430.60 = 648,124.40 : x
  2. Step 2: Convert to fraction form
    828,138.80/1,241,430.60 = 648,124.40/x
  3. Step 3: Cross multiply
    828,138.80x = 1,241,430.60 × 648,124.40
  4. Step 4: Simplify right side
    828,138.80x = 804,601,462,766.64
  5. Step 5: Solve for x
    x = 804,601,462,766.64/828,138.80
  6. Step 6: Final answer
    x = 971,578.03

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1.5x scale

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.