Home / 840,396.51-1,159,755.57-458,431.29

Finding the Fourth Proportional to 840,396.51, 1,159,755.57 and 458,431.29

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Solution

The fourth proportional to 840,396.51, 1,159,755.57 and 458,431.29 is: 632,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,396.51 : 1,159,755.57 = 458,431.29 : x
  2. Step 2: Convert to fraction form
    840,396.51/1,159,755.57 = 458,431.29/x
  3. Step 3: Cross multiply
    840,396.51x = 1,159,755.57 × 458,431.29
  4. Step 4: Simplify right side
    840,396.51x = 531,668,242,039.79
  5. Step 5: Solve for x
    x = 531,668,242,039.79/840,396.51
  6. Step 6: Final answer
    x = 632,639.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.