Home / 1,217,859.84-1,680,085.84-788,278

Finding the Fourth Proportional to 1,217,859.84, 1,680,085.84 and 788,278

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Solution

The fourth proportional to 1,217,859.84, 1,680,085.84 and 788,278 is: 1,087,460.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,859.84 : 1,680,085.84 = 788,278 : x
  2. Step 2: Convert to fraction form
    1,217,859.84/1,680,085.84 = 788,278/x
  3. Step 3: Cross multiply
    1,217,859.84x = 1,680,085.84 × 788,278
  4. Step 4: Simplify right side
    1,217,859.84x = 1,324,374,705,783.52
  5. Step 5: Solve for x
    x = 1,324,374,705,783.52/1,217,859.84
  6. Step 6: Final answer
    x = 1,087,460.69

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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.