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Finding the Fourth Proportional to 644,025.79, 888,715.17 and 353,635.32

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Solution

The fourth proportional to 644,025.79, 888,715.17 and 353,635.32 is: 487,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,025.79 : 888,715.17 = 353,635.32 : x
  2. Step 2: Convert to fraction form
    644,025.79/888,715.17 = 353,635.32/x
  3. Step 3: Cross multiply
    644,025.79x = 888,715.17 × 353,635.32
  4. Step 4: Simplify right side
    644,025.79x = 314,281,075,088.79
  5. Step 5: Solve for x
    x = 314,281,075,088.79/644,025.79
  6. Step 6: Final answer
    x = 487,994.55

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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.