Home / 808,712.48-1,211,870.66-328,356.16

Finding the Fourth Proportional to 808,712.48, 1,211,870.66 and 328,356.16

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Solution

The fourth proportional to 808,712.48, 1,211,870.66 and 328,356.16 is: 492,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,712.48 : 1,211,870.66 = 328,356.16 : x
  2. Step 2: Convert to fraction form
    808,712.48/1,211,870.66 = 328,356.16/x
  3. Step 3: Cross multiply
    808,712.48x = 1,211,870.66 × 328,356.16
  4. Step 4: Simplify right side
    808,712.48x = 397,925,191,662.81
  5. Step 5: Solve for x
    x = 397,925,191,662.81/808,712.48
  6. Step 6: Final answer
    x = 492,047.79

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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.