Home / 840,709.67-1,261,051.14-391,179.11

Finding the Fourth Proportional to 840,709.67, 1,261,051.14 and 391,179.11

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Solution

The fourth proportional to 840,709.67, 1,261,051.14 and 391,179.11 is: 586,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,709.67 : 1,261,051.14 = 391,179.11 : x
  2. Step 2: Convert to fraction form
    840,709.67/1,261,051.14 = 391,179.11/x
  3. Step 3: Cross multiply
    840,709.67x = 1,261,051.14 × 391,179.11
  4. Step 4: Simplify right side
    840,709.67x = 493,296,862,609.69
  5. Step 5: Solve for x
    x = 493,296,862,609.69/840,709.67
  6. Step 6: Final answer
    x = 586,762.45

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Double scale
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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.