Home / 1,210,804.80-1,820,143.80-858,260.40

Finding the Fourth Proportional to 1,210,804.80, 1,820,143.80 and 858,260.40

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Solution

The fourth proportional to 1,210,804.80, 1,820,143.80 and 858,260.40 is: 1,290,181.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,804.80 : 1,820,143.80 = 858,260.40 : x
  2. Step 2: Convert to fraction form
    1,210,804.80/1,820,143.80 = 858,260.40/x
  3. Step 3: Cross multiply
    1,210,804.80x = 1,820,143.80 × 858,260.40
  4. Step 4: Simplify right side
    1,210,804.80x = 1,562,157,345,845.52
  5. Step 5: Solve for x
    x = 1,562,157,345,845.52/1,210,804.80
  6. Step 6: Final answer
    x = 1,290,181.00

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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.