Home / 816,119.20-1,224,178.80-685,482.40

Finding the Fourth Proportional to 816,119.20, 1,224,178.80 and 685,482.40

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Solution

The fourth proportional to 816,119.20, 1,224,178.80 and 685,482.40 is: 1,028,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,119.20 : 1,224,178.80 = 685,482.40 : x
  2. Step 2: Convert to fraction form
    816,119.20/1,224,178.80 = 685,482.40/x
  3. Step 3: Cross multiply
    816,119.20x = 1,224,178.80 × 685,482.40
  4. Step 4: Simplify right side
    816,119.20x = 839,153,021,853.12
  5. Step 5: Solve for x
    x = 839,153,021,853.12/816,119.20
  6. Step 6: Final answer
    x = 1,028,223.60

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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.