Home / 691,101.09-1,036,792.58-391,715.37

Finding the Fourth Proportional to 691,101.09, 1,036,792.58 and 391,715.37

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Solution

The fourth proportional to 691,101.09, 1,036,792.58 and 391,715.37 is: 587,652.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101.09 : 1,036,792.58 = 391,715.37 : x
  2. Step 2: Convert to fraction form
    691,101.09/1,036,792.58 = 391,715.37/x
  3. Step 3: Cross multiply
    691,101.09x = 1,036,792.58 × 391,715.37
  4. Step 4: Simplify right side
    691,101.09x = 406,127,587,129.38
  5. Step 5: Solve for x
    x = 406,127,587,129.38/691,101.09
  6. Step 6: Final answer
    x = 587,652.94

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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.