Home / 765,875.86-1,056,867.14-421,644.49

Finding the Fourth Proportional to 765,875.86, 1,056,867.14 and 421,644.49

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Solution

The fourth proportional to 765,875.86, 1,056,867.14 and 421,644.49 is: 581,846.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,875.86 : 1,056,867.14 = 421,644.49 : x
  2. Step 2: Convert to fraction form
    765,875.86/1,056,867.14 = 421,644.49/x
  3. Step 3: Cross multiply
    765,875.86x = 1,056,867.14 × 421,644.49
  4. Step 4: Simplify right side
    765,875.86x = 445,622,204,655.00
  5. Step 5: Solve for x
    x = 445,622,204,655.00/765,875.86
  6. Step 6: Final answer
    x = 581,846.52

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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.