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Finding the Fourth Proportional to 535,403.40, 738,879.86 and 320,501.88

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Solution

The fourth proportional to 535,403.40, 738,879.86 and 320,501.88 is: 442,306.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,403.40 : 738,879.86 = 320,501.88 : x
  2. Step 2: Convert to fraction form
    535,403.40/738,879.86 = 320,501.88/x
  3. Step 3: Cross multiply
    535,403.40x = 738,879.86 × 320,501.88
  4. Step 4: Simplify right side
    535,403.40x = 236,812,384,224.14
  5. Step 5: Solve for x
    x = 236,812,384,224.14/535,403.40
  6. Step 6: Final answer
    x = 442,306.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.