Home / 1,426,391.62-1,968,416.35-781,809.82

Finding the Fourth Proportional to 1,426,391.62, 1,968,416.35 and 781,809.82

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Solution

The fourth proportional to 1,426,391.62, 1,968,416.35 and 781,809.82 is: 1,078,895.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,391.62 : 1,968,416.35 = 781,809.82 : x
  2. Step 2: Convert to fraction form
    1,426,391.62/1,968,416.35 = 781,809.82/x
  3. Step 3: Cross multiply
    1,426,391.62x = 1,968,416.35 × 781,809.82
  4. Step 4: Simplify right side
    1,426,391.62x = 1,538,927,232,278.56
  5. Step 5: Solve for x
    x = 1,538,927,232,278.56/1,426,391.62
  6. Step 6: Final answer
    x = 1,078,895.31

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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.