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Finding the Third Proportional to 358,957,912.50 and 780,808,545

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Solution

The third proportional to 358,957,912.50 and 780,808,545 is: 1,698,421,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,957,912.50 : 780,808,545 = 780,808,545 : x
  2. Step 2: Convert to fraction form
    358,957,912.50/780,808,545 = 780,808,545/x
  3. Step 3: Cross multiply
    358,957,912.50x = 780,808,545 × 780,808,545
  4. Step 4: Simplify right side
    358,957,912.50x = 609,661,983,945,017,088
  5. Step 5: Solve for x
    x = 609,661,983,945,017,088/358,957,912.50
  6. Step 6: Final answer
    x = 1,698,421,911.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.