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Finding the Fourth Proportional to 742,555.80, 1,024,728 and 403,023.96

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Solution

The fourth proportional to 742,555.80, 1,024,728 and 403,023.96 is: 556,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,555.80 : 1,024,728 = 403,023.96 : x
  2. Step 2: Convert to fraction form
    742,555.80/1,024,728 = 403,023.96/x
  3. Step 3: Cross multiply
    742,555.80x = 1,024,728 × 403,023.96
  4. Step 4: Simplify right side
    742,555.80x = 412,989,936,482.88
  5. Step 5: Solve for x
    x = 412,989,936,482.88/742,555.80
  6. Step 6: Final answer
    x = 556,173.61

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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.