Home / 806,389.43-1,208,734.85-406,189.08

Finding the Fourth Proportional to 806,389.43, 1,208,734.85 and 406,189.08

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Solution

The fourth proportional to 806,389.43, 1,208,734.85 and 406,189.08 is: 608,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,389.43 : 1,208,734.85 = 406,189.08 : x
  2. Step 2: Convert to fraction form
    806,389.43/1,208,734.85 = 406,189.08/x
  3. Step 3: Cross multiply
    806,389.43x = 1,208,734.85 × 406,189.08
  4. Step 4: Simplify right side
    806,389.43x = 490,974,897,700.91
  5. Step 5: Solve for x
    x = 490,974,897,700.91/806,389.43
  6. Step 6: Final answer
    x = 608,855.82

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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.