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Finding the Fourth Proportional to 761,297.36, 1,050,549 and 421,745.36

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Solution

The fourth proportional to 761,297.36, 1,050,549 and 421,745.36 is: 581,985.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,297.36 : 1,050,549 = 421,745.36 : x
  2. Step 2: Convert to fraction form
    761,297.36/1,050,549 = 421,745.36/x
  3. Step 3: Cross multiply
    761,297.36x = 1,050,549 × 421,745.36
  4. Step 4: Simplify right side
    761,297.36x = 443,064,166,202.64
  5. Step 5: Solve for x
    x = 443,064,166,202.64/761,297.36
  6. Step 6: Final answer
    x = 581,985.69

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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.