Home / 689,345.45-951,283.07-383,415.25

Finding the Fourth Proportional to 689,345.45, 951,283.07 and 383,415.25

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Solution

The fourth proportional to 689,345.45, 951,283.07 and 383,415.25 is: 529,105.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,345.45 : 951,283.07 = 383,415.25 : x
  2. Step 2: Convert to fraction form
    689,345.45/951,283.07 = 383,415.25/x
  3. Step 3: Cross multiply
    689,345.45x = 951,283.07 × 383,415.25
  4. Step 4: Simplify right side
    689,345.45x = 364,736,432,355.51
  5. Step 5: Solve for x
    x = 364,736,432,355.51/689,345.45
  6. Step 6: Final answer
    x = 529,105.45

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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.