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Finding the Fourth Proportional to 682,818.80, 1,024,276.80 and 209,503.40

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Solution

The fourth proportional to 682,818.80, 1,024,276.80 and 209,503.40 is: 314,270.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,818.80 : 1,024,276.80 = 209,503.40 : x
  2. Step 2: Convert to fraction form
    682,818.80/1,024,276.80 = 209,503.40/x
  3. Step 3: Cross multiply
    682,818.80x = 1,024,276.80 × 209,503.40
  4. Step 4: Simplify right side
    682,818.80x = 214,589,472,141.12
  5. Step 5: Solve for x
    x = 214,589,472,141.12/682,818.80
  6. Step 6: Final answer
    x = 314,270.01

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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.