Home / 689,903.12-952,097.64-383,999.06

Finding the Fourth Proportional to 689,903.12, 952,097.64 and 383,999.06

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Solution

The fourth proportional to 689,903.12, 952,097.64 and 383,999.06 is: 529,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,903.12 : 952,097.64 = 383,999.06 : x
  2. Step 2: Convert to fraction form
    689,903.12/952,097.64 = 383,999.06/x
  3. Step 3: Cross multiply
    689,903.12x = 952,097.64 × 383,999.06
  4. Step 4: Simplify right side
    689,903.12x = 365,604,598,788.22
  5. Step 5: Solve for x
    x = 365,604,598,788.22/689,903.12
  6. Step 6: Final answer
    x = 529,936.14

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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.