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Finding the Fourth Proportional to 1,052,964.69, 1,579,643.87 and 421,927.71

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Solution

The fourth proportional to 1,052,964.69, 1,579,643.87 and 421,927.71 is: 632,970.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052,964.69 : 1,579,643.87 = 421,927.71 : x
  2. Step 2: Convert to fraction form
    1,052,964.69/1,579,643.87 = 421,927.71/x
  3. Step 3: Cross multiply
    1,052,964.69x = 1,579,643.87 × 421,927.71
  4. Step 4: Simplify right side
    1,052,964.69x = 666,495,518,575.00
  5. Step 5: Solve for x
    x = 666,495,518,575.00/1,052,964.69
  6. Step 6: Final answer
    x = 632,970.44

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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.