Home / 1,405,765.19-2,108,647.77-340,807.21

Finding the Fourth Proportional to 1,405,765.19, 2,108,647.77 and 340,807.21

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Solution

The fourth proportional to 1,405,765.19, 2,108,647.77 and 340,807.21 is: 511,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,765.19 : 2,108,647.77 = 340,807.21 : x
  2. Step 2: Convert to fraction form
    1,405,765.19/2,108,647.77 = 340,807.21/x
  3. Step 3: Cross multiply
    1,405,765.19x = 2,108,647.77 × 340,807.21
  4. Step 4: Simplify right side
    1,405,765.19x = 718,642,363,366.42
  5. Step 5: Solve for x
    x = 718,642,363,366.42/1,405,765.19
  6. Step 6: Final answer
    x = 511,210.81

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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.