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Finding the Fourth Proportional to 553,381.56, 763,720.88 and 323,925.03

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Solution

The fourth proportional to 553,381.56, 763,720.88 and 323,925.03 is: 447,048.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,381.56 : 763,720.88 = 323,925.03 : x
  2. Step 2: Convert to fraction form
    553,381.56/763,720.88 = 323,925.03/x
  3. Step 3: Cross multiply
    553,381.56x = 763,720.88 × 323,925.03
  4. Step 4: Simplify right side
    553,381.56x = 247,388,307,346.00
  5. Step 5: Solve for x
    x = 247,388,307,346.00/553,381.56
  6. Step 6: Final answer
    x = 447,048.34

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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.