Home / 812,588.40-1,218,882.60-392,684.40

Finding the Fourth Proportional to 812,588.40, 1,218,882.60 and 392,684.40

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Solution

The fourth proportional to 812,588.40, 1,218,882.60 and 392,684.40 is: 589,026.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,588.40 : 1,218,882.60 = 392,684.40 : x
  2. Step 2: Convert to fraction form
    812,588.40/1,218,882.60 = 392,684.40/x
  3. Step 3: Cross multiply
    812,588.40x = 1,218,882.60 × 392,684.40
  4. Step 4: Simplify right side
    812,588.40x = 478,636,182,451.44
  5. Step 5: Solve for x
    x = 478,636,182,451.44/812,588.40
  6. Step 6: Final answer
    x = 589,026.60

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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.