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Finding the Fourth Proportional to 1,052,964.03, 1,579,642.88 and 421,927.05

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Solution

The fourth proportional to 1,052,964.03, 1,579,642.88 and 421,927.05 is: 632,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052,964.03 : 1,579,642.88 = 421,927.05 : x
  2. Step 2: Convert to fraction form
    1,052,964.03/1,579,642.88 = 421,927.05/x
  3. Step 3: Cross multiply
    1,052,964.03x = 1,579,642.88 × 421,927.05
  4. Step 4: Simplify right side
    1,052,964.03x = 666,494,066,599.27
  5. Step 5: Solve for x
    x = 666,494,066,599.27/1,052,964.03
  6. Step 6: Final answer
    x = 632,969.45

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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.