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Finding the Fourth Proportional to 504,905.16, 696,673.94 and 300,975.05

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Solution

The fourth proportional to 504,905.16, 696,673.94 and 300,975.05 is: 415,288.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,905.16 : 696,673.94 = 300,975.05 : x
  2. Step 2: Convert to fraction form
    504,905.16/696,673.94 = 300,975.05/x
  3. Step 3: Cross multiply
    504,905.16x = 696,673.94 × 300,975.05
  4. Step 4: Simplify right side
    504,905.16x = 209,681,472,420.32
  5. Step 5: Solve for x
    x = 209,681,472,420.32/504,905.16
  6. Step 6: Final answer
    x = 415,288.83

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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.