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Finding the Third Proportional to 637,830 and 986,985

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Solution

The third proportional to 637,830 and 986,985 is: 1,527,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,830 : 986,985 = 986,985 : x
  2. Step 2: Convert to fraction form
    637,830/986,985 = 986,985/x
  3. Step 3: Cross multiply
    637,830x = 986,985 × 986,985
  4. Step 4: Simplify right side
    637,830x = 974,139,390,225
  5. Step 5: Solve for x
    x = 974,139,390,225/637,830
  6. Step 6: Final answer
    x = 1,527,271.20

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.