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Finding the Fourth Proportional to 569,765.85, 786,518.98 and 355,012.03

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Solution

The fourth proportional to 569,765.85, 786,518.98 and 355,012.03 is: 490,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,765.85 : 786,518.98 = 355,012.03 : x
  2. Step 2: Convert to fraction form
    569,765.85/786,518.98 = 355,012.03/x
  3. Step 3: Cross multiply
    569,765.85x = 786,518.98 × 355,012.03
  4. Step 4: Simplify right side
    569,765.85x = 279,223,695,790.74
  5. Step 5: Solve for x
    x = 279,223,695,790.74/569,765.85
  6. Step 6: Final answer
    x = 490,067.45

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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.