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Finding the Fourth Proportional to 1,052,964.88, 1,579,644.15 and 421,927.90

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Solution

The fourth proportional to 1,052,964.88, 1,579,644.15 and 421,927.90 is: 632,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052,964.88 : 1,579,644.15 = 421,927.90 : x
  2. Step 2: Convert to fraction form
    1,052,964.88/1,579,644.15 = 421,927.90/x
  3. Step 3: Cross multiply
    1,052,964.88x = 1,579,644.15 × 421,927.90
  4. Step 4: Simplify right side
    1,052,964.88x = 666,495,933,425.45
  5. Step 5: Solve for x
    x = 666,495,933,425.45/1,052,964.88
  6. Step 6: Final answer
    x = 632,970.72

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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.