Home / 809,021.05-1,115,977.64-518,529.13

Finding the Fourth Proportional to 809,021.05, 1,115,977.64 and 518,529.13

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Solution

The fourth proportional to 809,021.05, 1,115,977.64 and 518,529.13 is: 715,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,021.05 : 1,115,977.64 = 518,529.13 : x
  2. Step 2: Convert to fraction form
    809,021.05/1,115,977.64 = 518,529.13/x
  3. Step 3: Cross multiply
    809,021.05x = 1,115,977.64 × 518,529.13
  4. Step 4: Simplify right side
    809,021.05x = 578,666,909,386.06
  5. Step 5: Solve for x
    x = 578,666,909,386.06/809,021.05
  6. Step 6: Final answer
    x = 715,268.05

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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.