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Finding the Fourth Proportional to 655,533.90, 904,662.02 and 379,901.20

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Solution

The fourth proportional to 655,533.90, 904,662.02 and 379,901.20 is: 524,278.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,533.90 : 904,662.02 = 379,901.20 : x
  2. Step 2: Convert to fraction form
    655,533.90/904,662.02 = 379,901.20/x
  3. Step 3: Cross multiply
    655,533.90x = 904,662.02 × 379,901.20
  4. Step 4: Simplify right side
    655,533.90x = 343,682,186,992.42
  5. Step 5: Solve for x
    x = 343,682,186,992.42/655,533.90
  6. Step 6: Final answer
    x = 524,278.28

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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.