Home / 515,736.05-711,704.54-286,280.06

Finding the Fourth Proportional to 515,736.05, 711,704.54 and 286,280.06

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Solution

The fourth proportional to 515,736.05, 711,704.54 and 286,280.06 is: 395,060.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,736.05 : 711,704.54 = 286,280.06 : x
  2. Step 2: Convert to fraction form
    515,736.05/711,704.54 = 286,280.06/x
  3. Step 3: Cross multiply
    515,736.05x = 711,704.54 × 286,280.06
  4. Step 4: Simplify right side
    515,736.05x = 203,746,815,570.65
  5. Step 5: Solve for x
    x = 203,746,815,570.65/515,736.05
  6. Step 6: Final answer
    x = 395,060.26

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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.