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Finding the Fourth Proportional to 655,120.20, 904,085.99 and 356,774.10

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Solution

The fourth proportional to 655,120.20, 904,085.99 and 356,774.10 is: 492,359.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,120.20 : 904,085.99 = 356,774.10 : x
  2. Step 2: Convert to fraction form
    655,120.20/904,085.99 = 356,774.10/x
  3. Step 3: Cross multiply
    655,120.20x = 904,085.99 × 356,774.10
  4. Step 4: Simplify right side
    655,120.20x = 322,554,459,100.56
  5. Step 5: Solve for x
    x = 322,554,459,100.56/655,120.20
  6. Step 6: Final answer
    x = 492,359.21

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1.5x scale

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.