Home / 515,673.32-711,618.15-286,217.24

Finding the Fourth Proportional to 515,673.32, 711,618.15 and 286,217.24

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Solution

The fourth proportional to 515,673.32, 711,618.15 and 286,217.24 is: 394,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,673.32 : 711,618.15 = 286,217.24 : x
  2. Step 2: Convert to fraction form
    515,673.32/711,618.15 = 286,217.24/x
  3. Step 3: Cross multiply
    515,673.32x = 711,618.15 × 286,217.24
  4. Step 4: Simplify right side
    515,673.32x = 203,677,379,268.82
  5. Step 5: Solve for x
    x = 203,677,379,268.82/515,673.32
  6. Step 6: Final answer
    x = 394,973.67

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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.