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Finding the Fourth Proportional to 504,688.56, 696,390.30 and 300,734.40

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Solution

The fourth proportional to 504,688.56, 696,390.30 and 300,734.40 is: 414,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,688.56 : 696,390.30 = 300,734.40 : x
  2. Step 2: Convert to fraction form
    504,688.56/696,390.30 = 300,734.40/x
  3. Step 3: Cross multiply
    504,688.56x = 696,390.30 × 300,734.40
  4. Step 4: Simplify right side
    504,688.56x = 209,428,519,036.32
  5. Step 5: Solve for x
    x = 209,428,519,036.32/504,688.56
  6. Step 6: Final answer
    x = 414,965.85

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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.