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Finding the Fourth Proportional to 605,656.20, 907,390.80 and 352,729.65

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Solution

The fourth proportional to 605,656.20, 907,390.80 and 352,729.65 is: 528,457.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,656.20 : 907,390.80 = 352,729.65 : x
  2. Step 2: Convert to fraction form
    605,656.20/907,390.80 = 352,729.65/x
  3. Step 3: Cross multiply
    605,656.20x = 907,390.80 × 352,729.65
  4. Step 4: Simplify right side
    605,656.20x = 320,063,639,297.22
  5. Step 5: Solve for x
    x = 320,063,639,297.22/605,656.20
  6. Step 6: Final answer
    x = 528,457.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.