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Finding the Fourth Proportional to 718,787, 1,078,066.14 and 238,975

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Solution

The fourth proportional to 718,787, 1,078,066.14 and 238,975 is: 358,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,787 : 1,078,066.14 = 238,975 : x
  2. Step 2: Convert to fraction form
    718,787/1,078,066.14 = 238,975/x
  3. Step 3: Cross multiply
    718,787x = 1,078,066.14 × 238,975
  4. Step 4: Simplify right side
    718,787x = 257,630,855,806.50
  5. Step 5: Solve for x
    x = 257,630,855,806.50/718,787
  6. Step 6: Final answer
    x = 358,424.48

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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.