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Finding the Third Proportional to 359,840 and 528,090

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Solution

The third proportional to 359,840 and 528,090 is: 775,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,840 : 528,090 = 528,090 : x
  2. Step 2: Convert to fraction form
    359,840/528,090 = 528,090/x
  3. Step 3: Cross multiply
    359,840x = 528,090 × 528,090
  4. Step 4: Simplify right side
    359,840x = 278,879,048,100
  5. Step 5: Solve for x
    x = 278,879,048,100/359,840
  6. Step 6: Final answer
    x = 775,008.47

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.