Home / 1,240,219.24-1,710,326.82-810,867.40

Finding the Fourth Proportional to 1,240,219.24, 1,710,326.82 and 810,867.40

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Solution

The fourth proportional to 1,240,219.24, 1,710,326.82 and 810,867.40 is: 1,118,228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,219.24 : 1,710,326.82 = 810,867.40 : x
  2. Step 2: Convert to fraction form
    1,240,219.24/1,710,326.82 = 810,867.40/x
  3. Step 3: Cross multiply
    1,240,219.24x = 1,710,326.82 × 810,867.40
  4. Step 4: Simplify right side
    1,240,219.24x = 1,386,848,261,683.67
  5. Step 5: Solve for x
    x = 1,386,848,261,683.67/1,240,219.24
  6. Step 6: Final answer
    x = 1,118,228.31

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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.