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Finding the Fourth Proportional to 1,293,454.67, 1,784,986.00 and 742,260.20

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Solution

The fourth proportional to 1,293,454.67, 1,784,986.00 and 742,260.20 is: 1,024,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,454.67 : 1,784,986.00 = 742,260.20 : x
  2. Step 2: Convert to fraction form
    1,293,454.67/1,784,986.00 = 742,260.20/x
  3. Step 3: Cross multiply
    1,293,454.67x = 1,784,986.00 × 742,260.20
  4. Step 4: Simplify right side
    1,293,454.67x = 1,324,924,054,576.62
  5. Step 5: Solve for x
    x = 1,324,924,054,576.62/1,293,454.67
  6. Step 6: Final answer
    x = 1,024,329.72

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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.