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Finding the Fourth Proportional to 788,179, 1,087,688.28 and 448,647.28

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Solution

The fourth proportional to 788,179, 1,087,688.28 and 448,647.28 is: 619,133.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,179 : 1,087,688.28 = 448,647.28 : x
  2. Step 2: Convert to fraction form
    788,179/1,087,688.28 = 448,647.28/x
  3. Step 3: Cross multiply
    788,179x = 1,087,688.28 × 448,647.28
  4. Step 4: Simplify right side
    788,179x = 487,988,388,309.88
  5. Step 5: Solve for x
    x = 487,988,388,309.88/788,179
  6. Step 6: Final answer
    x = 619,133.96

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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.