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Finding the Fourth Proportional to 569,768.91, 786,523.20 and 355,015.08

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Solution

The fourth proportional to 569,768.91, 786,523.20 and 355,015.08 is: 490,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,768.91 : 786,523.20 = 355,015.08 : x
  2. Step 2: Convert to fraction form
    569,768.91/786,523.20 = 355,015.08/x
  3. Step 3: Cross multiply
    569,768.91x = 786,523.20 × 355,015.08
  4. Step 4: Simplify right side
    569,768.91x = 279,227,596,769.86
  5. Step 5: Solve for x
    x = 279,227,596,769.86/569,768.91
  6. Step 6: Final answer
    x = 490,071.66

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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.