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Finding the Third Proportional to 528,390 and 1,303,119

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Solution

The third proportional to 528,390 and 1,303,119 is: 3,213,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,390 : 1,303,119 = 1,303,119 : x
  2. Step 2: Convert to fraction form
    528,390/1,303,119 = 1,303,119/x
  3. Step 3: Cross multiply
    528,390x = 1,303,119 × 1,303,119
  4. Step 4: Simplify right side
    528,390x = 1,698,119,128,161
  5. Step 5: Solve for x
    x = 1,698,119,128,161/528,390
  6. Step 6: Final answer
    x = 3,213,760.91

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.