Home / 743,987.41-1,026,782.90-421,662.91

Finding the Fourth Proportional to 743,987.41, 1,026,782.90 and 421,662.91

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Solution

The fourth proportional to 743,987.41, 1,026,782.90 and 421,662.91 is: 581,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,987.41 : 1,026,782.90 = 421,662.91 : x
  2. Step 2: Convert to fraction form
    743,987.41/1,026,782.90 = 421,662.91/x
  3. Step 3: Cross multiply
    743,987.41x = 1,026,782.90 × 421,662.91
  4. Step 4: Simplify right side
    743,987.41x = 432,956,262,951.06
  5. Step 5: Solve for x
    x = 432,956,262,951.06/743,987.41
  6. Step 6: Final answer
    x = 581,940.31

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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.