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Finding the Third Proportional to 403,520 and 565,520

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Solution

The third proportional to 403,520 and 565,520 is: 792,557.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,520 : 565,520 = 565,520 : x
  2. Step 2: Convert to fraction form
    403,520/565,520 = 565,520/x
  3. Step 3: Cross multiply
    403,520x = 565,520 × 565,520
  4. Step 4: Simplify right side
    403,520x = 319,812,870,400
  5. Step 5: Solve for x
    x = 319,812,870,400/403,520
  6. Step 6: Final answer
    x = 792,557.67

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.