Home / 1,218,247.90-1,680,618.99-788,667.10

Finding the Fourth Proportional to 1,218,247.90, 1,680,618.99 and 788,667.10

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Solution

The fourth proportional to 1,218,247.90, 1,680,618.99 and 788,667.10 is: 1,087,996.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,247.90 : 1,680,618.99 = 788,667.10 : x
  2. Step 2: Convert to fraction form
    1,218,247.90/1,680,618.99 = 788,667.10/x
  3. Step 3: Cross multiply
    1,218,247.90x = 1,680,618.99 × 788,667.10
  4. Step 4: Simplify right side
    1,218,247.90x = 1,325,448,905,048.23
  5. Step 5: Solve for x
    x = 1,325,448,905,048.23/1,218,247.90
  6. Step 6: Final answer
    x = 1,087,996.05

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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.