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Finding the Fourth Proportional to 512,355.60, 707,021.40 and 286,015.44

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Solution

The fourth proportional to 512,355.60, 707,021.40 and 286,015.44 is: 394,684.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,355.60 : 707,021.40 = 286,015.44 : x
  2. Step 2: Convert to fraction form
    512,355.60/707,021.40 = 286,015.44/x
  3. Step 3: Cross multiply
    512,355.60x = 707,021.40 × 286,015.44
  4. Step 4: Simplify right side
    512,355.60x = 202,219,036,810.42
  5. Step 5: Solve for x
    x = 202,219,036,810.42/512,355.60
  6. Step 6: Final answer
    x = 394,684.94

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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.