Home / 685,389.51-945,837.41-383,583.51

Finding the Fourth Proportional to 685,389.51, 945,837.41 and 383,583.51

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Solution

The fourth proportional to 685,389.51, 945,837.41 and 383,583.51 is: 529,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,389.51 : 945,837.41 = 383,583.51 : x
  2. Step 2: Convert to fraction form
    685,389.51/945,837.41 = 383,583.51/x
  3. Step 3: Cross multiply
    685,389.51x = 945,837.41 × 383,583.51
  4. Step 4: Simplify right side
    685,389.51x = 362,807,631,699.19
  5. Step 5: Solve for x
    x = 362,807,631,699.19/685,389.51
  6. Step 6: Final answer
    x = 529,345.18

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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.