Home / 765,650.26-1,056,588.77-421,478.83

Finding the Fourth Proportional to 765,650.26, 1,056,588.77 and 421,478.83

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Solution

The fourth proportional to 765,650.26, 1,056,588.77 and 421,478.83 is: 581,636.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,650.26 : 1,056,588.77 = 421,478.83 : x
  2. Step 2: Convert to fraction form
    765,650.26/1,056,588.77 = 421,478.83/x
  3. Step 3: Cross multiply
    765,650.26x = 1,056,588.77 × 421,478.83
  4. Step 4: Simplify right side
    765,650.26x = 445,329,798,570.74
  5. Step 5: Solve for x
    x = 445,329,798,570.74/765,650.26
  6. Step 6: Final answer
    x = 581,636.06

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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.