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Finding the Fourth Proportional to 403,891.65, 605,946.83 and 359,823.60

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Solution

The fourth proportional to 403,891.65, 605,946.83 and 359,823.60 is: 539,832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,891.65 : 605,946.83 = 359,823.60 : x
  2. Step 2: Convert to fraction form
    403,891.65/605,946.83 = 359,823.60/x
  3. Step 3: Cross multiply
    403,891.65x = 605,946.83 × 359,823.60
  4. Step 4: Simplify right side
    403,891.65x = 218,033,967,980.07
  5. Step 5: Solve for x
    x = 218,033,967,980.07/403,891.65
  6. Step 6: Final answer
    x = 539,832.82

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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.