Home / 515,895.75-711,936.14-289,541.25

Finding the Fourth Proportional to 515,895.75, 711,936.14 and 289,541.25

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Solution

The fourth proportional to 515,895.75, 711,936.14 and 289,541.25 is: 399,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,895.75 : 711,936.14 = 289,541.25 : x
  2. Step 2: Convert to fraction form
    515,895.75/711,936.14 = 289,541.25/x
  3. Step 3: Cross multiply
    515,895.75x = 711,936.14 × 289,541.25
  4. Step 4: Simplify right side
    515,895.75x = 206,134,878,448.07
  5. Step 5: Solve for x
    x = 206,134,878,448.07/515,895.75
  6. Step 6: Final answer
    x = 399,566.93

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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.