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Finding the Third Proportional to 520,080 and 776,688

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Solution

The third proportional to 520,080 and 776,688 is: 1,159,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,080 : 776,688 = 776,688 : x
  2. Step 2: Convert to fraction form
    520,080/776,688 = 776,688/x
  3. Step 3: Cross multiply
    520,080x = 776,688 × 776,688
  4. Step 4: Simplify right side
    520,080x = 603,244,249,344
  5. Step 5: Solve for x
    x = 603,244,249,344/520,080
  6. Step 6: Final answer
    x = 1,159,906.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.