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Finding the Fourth Proportional to 648,446.12, 894,852.21 and 376,580.84

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Solution

The fourth proportional to 648,446.12, 894,852.21 and 376,580.84 is: 519,679.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,446.12 : 894,852.21 = 376,580.84 : x
  2. Step 2: Convert to fraction form
    648,446.12/894,852.21 = 376,580.84/x
  3. Step 3: Cross multiply
    648,446.12x = 894,852.21 × 376,580.84
  4. Step 4: Simplify right side
    648,446.12x = 336,984,196,917.66
  5. Step 5: Solve for x
    x = 336,984,196,917.66/648,446.12
  6. Step 6: Final answer
    x = 519,679.56

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Double scale
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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.