Home / 645,845.40-968,330.70-330,042.60

Finding the Fourth Proportional to 645,845.40, 968,330.70 and 330,042.60

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Solution

The fourth proportional to 645,845.40, 968,330.70 and 330,042.60 is: 494,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,845.40 : 968,330.70 = 330,042.60 : x
  2. Step 2: Convert to fraction form
    645,845.40/968,330.70 = 330,042.60/x
  3. Step 3: Cross multiply
    645,845.40x = 968,330.70 × 330,042.60
  4. Step 4: Simplify right side
    645,845.40x = 319,590,381,887.82
  5. Step 5: Solve for x
    x = 319,590,381,887.82/645,845.40
  6. Step 6: Final answer
    x = 494,840.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.