Home / 1,210,630.82-1,670,270.64-781,196.36

Finding the Fourth Proportional to 1,210,630.82, 1,670,270.64 and 781,196.36

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Solution

The fourth proportional to 1,210,630.82, 1,670,270.64 and 781,196.36 is: 1,077,792.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,630.82 : 1,670,270.64 = 781,196.36 : x
  2. Step 2: Convert to fraction form
    1,210,630.82/1,670,270.64 = 781,196.36/x
  3. Step 3: Cross multiply
    1,210,630.82x = 1,670,270.64 × 781,196.36
  4. Step 4: Simplify right side
    1,210,630.82x = 1,304,809,344,182.87
  5. Step 5: Solve for x
    x = 1,304,809,344,182.87/1,210,630.82
  6. Step 6: Final answer
    x = 1,077,792.93

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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.