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Finding the Fourth Proportional to 566,485.40, 781,767.45 and 308,379.53

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Solution

The fourth proportional to 566,485.40, 781,767.45 and 308,379.53 is: 425,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,485.40 : 781,767.45 = 308,379.53 : x
  2. Step 2: Convert to fraction form
    566,485.40/781,767.45 = 308,379.53/x
  3. Step 3: Cross multiply
    566,485.40x = 781,767.45 × 308,379.53
  4. Step 4: Simplify right side
    566,485.40x = 241,081,074,891.46
  5. Step 5: Solve for x
    x = 241,081,074,891.46/566,485.40
  6. Step 6: Final answer
    x = 425,573.33

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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.