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Finding the Fourth Proportional to 631,980.40, 872,143.32 and 377,353.84

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Solution

The fourth proportional to 631,980.40, 872,143.32 and 377,353.84 is: 520,754.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,980.40 : 872,143.32 = 377,353.84 : x
  2. Step 2: Convert to fraction form
    631,980.40/872,143.32 = 377,353.84/x
  3. Step 3: Cross multiply
    631,980.40x = 872,143.32 × 377,353.84
  4. Step 4: Simplify right side
    631,980.40x = 329,106,630,832.35
  5. Step 5: Solve for x
    x = 329,106,630,832.35/631,980.40
  6. Step 6: Final answer
    x = 520,754.49

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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.