Home / 385,847.49-531,999.03-283,561.50

Finding the Fourth Proportional to 385,847.49, 531,999.03 and 283,561.50

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Solution

The fourth proportional to 385,847.49, 531,999.03 and 283,561.50 is: 390,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,847.49 : 531,999.03 = 283,561.50 : x
  2. Step 2: Convert to fraction form
    385,847.49/531,999.03 = 283,561.50/x
  3. Step 3: Cross multiply
    385,847.49x = 531,999.03 × 283,561.50
  4. Step 4: Simplify right side
    385,847.49x = 150,854,442,945.35
  5. Step 5: Solve for x
    x = 150,854,442,945.35/385,847.49
  6. Step 6: Final answer
    x = 390,969.09

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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.