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Finding the Fourth Proportional to 808,879.20, 1,212,881.40 and 335,612.40

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Solution

The fourth proportional to 808,879.20, 1,212,881.40 and 335,612.40 is: 503,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,879.20 : 1,212,881.40 = 335,612.40 : x
  2. Step 2: Convert to fraction form
    808,879.20/1,212,881.40 = 335,612.40/x
  3. Step 3: Cross multiply
    808,879.20x = 1,212,881.40 × 335,612.40
  4. Step 4: Simplify right side
    808,879.20x = 407,058,037,569.36
  5. Step 5: Solve for x
    x = 407,058,037,569.36/808,879.20
  6. Step 6: Final answer
    x = 503,237.12

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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.