Home / 655,755.13-904,983.20-397,813.06

Finding the Fourth Proportional to 655,755.13, 904,983.20 and 397,813.06

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Solution

The fourth proportional to 655,755.13, 904,983.20 and 397,813.06 is: 549,006.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,755.13 : 904,983.20 = 397,813.06 : x
  2. Step 2: Convert to fraction form
    655,755.13/904,983.20 = 397,813.06/x
  3. Step 3: Cross multiply
    655,755.13x = 904,983.20 × 397,813.06
  4. Step 4: Simplify right side
    655,755.13x = 360,014,136,040.59
  5. Step 5: Solve for x
    x = 360,014,136,040.59/655,755.13
  6. Step 6: Final answer
    x = 549,006.97

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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.