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Finding the Third Proportional to 489,762.70 and 742,036.57

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Solution

The third proportional to 489,762.70 and 742,036.57 is: 1,124,255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,762.70 : 742,036.57 = 742,036.57 : x
  2. Step 2: Convert to fraction form
    489,762.70/742,036.57 = 742,036.57/x
  3. Step 3: Cross multiply
    489,762.70x = 742,036.57 × 742,036.57
  4. Step 4: Simplify right side
    489,762.70x = 550,618,271,681.14
  5. Step 5: Solve for x
    x = 550,618,271,681.14/489,762.70
  6. Step 6: Final answer
    x = 1,124,255.21

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.