Home / 400,783.42-553,081.32-219,506.76

Finding the Fourth Proportional to 400,783.42, 553,081.32 and 219,506.76

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Solution

The fourth proportional to 400,783.42, 553,081.32 and 219,506.76 is: 302,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,783.42 : 553,081.32 = 219,506.76 : x
  2. Step 2: Convert to fraction form
    400,783.42/553,081.32 = 219,506.76/x
  3. Step 3: Cross multiply
    400,783.42x = 553,081.32 × 219,506.76
  4. Step 4: Simplify right side
    400,783.42x = 121,405,088,569.72
  5. Step 5: Solve for x
    x = 121,405,088,569.72/400,783.42
  6. Step 6: Final answer
    x = 302,919.44

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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.