Home / 765,649.26-1,056,587.39-421,477.83

Finding the Fourth Proportional to 765,649.26, 1,056,587.39 and 421,477.83

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Solution

The fourth proportional to 765,649.26, 1,056,587.39 and 421,477.83 is: 581,634.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,649.26 : 1,056,587.39 = 421,477.83 : x
  2. Step 2: Convert to fraction form
    765,649.26/1,056,587.39 = 421,477.83/x
  3. Step 3: Cross multiply
    765,649.26x = 1,056,587.39 × 421,477.83
  4. Step 4: Simplify right side
    765,649.26x = 445,328,159,815.72
  5. Step 5: Solve for x
    x = 445,328,159,815.72/765,649.26
  6. Step 6: Final answer
    x = 581,634.68

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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.