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Finding the Fourth Proportional to 478,661.49, 660,550.70 and 263,801.09

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Solution

The fourth proportional to 478,661.49, 660,550.70 and 263,801.09 is: 364,044.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,661.49 : 660,550.70 = 263,801.09 : x
  2. Step 2: Convert to fraction form
    478,661.49/660,550.70 = 263,801.09/x
  3. Step 3: Cross multiply
    478,661.49x = 660,550.70 × 263,801.09
  4. Step 4: Simplify right side
    478,661.49x = 174,253,990,038.50
  5. Step 5: Solve for x
    x = 174,253,990,038.50/478,661.49
  6. Step 6: Final answer
    x = 364,044.31

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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.