Home / 691,818.20-1,038,164.70-407,508.20

Finding the Fourth Proportional to 691,818.20, 1,038,164.70 and 407,508.20

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Solution

The fourth proportional to 691,818.20, 1,038,164.70 and 407,508.20 is: 611,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,818.20 : 1,038,164.70 = 407,508.20 : x
  2. Step 2: Convert to fraction form
    691,818.20/1,038,164.70 = 407,508.20/x
  3. Step 3: Cross multiply
    691,818.20x = 1,038,164.70 × 407,508.20
  4. Step 4: Simplify right side
    691,818.20x = 423,060,628,200.54
  5. Step 5: Solve for x
    x = 423,060,628,200.54/691,818.20
  6. Step 6: Final answer
    x = 611,519.95

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Double scale
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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.