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Finding the Fourth Proportional to 644,108.31, 888,852.54 and 357,621.03

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Solution

The fourth proportional to 644,108.31, 888,852.54 and 357,621.03 is: 493,507.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,108.31 : 888,852.54 = 357,621.03 : x
  2. Step 2: Convert to fraction form
    644,108.31/888,852.54 = 357,621.03/x
  3. Step 3: Cross multiply
    644,108.31x = 888,852.54 × 357,621.03
  4. Step 4: Simplify right side
    644,108.31x = 317,872,360,872.92
  5. Step 5: Solve for x
    x = 317,872,360,872.92/644,108.31
  6. Step 6: Final answer
    x = 493,507.62

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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.