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Finding the Third Proportional to 402,795,528 and 621,986,742

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Solution

The third proportional to 402,795,528 and 621,986,742 is: 960,456,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795,528 : 621,986,742 = 621,986,742 : x
  2. Step 2: Convert to fraction form
    402,795,528/621,986,742 = 621,986,742/x
  3. Step 3: Cross multiply
    402,795,528x = 621,986,742 × 621,986,742
  4. Step 4: Simplify right side
    402,795,528x = 386,867,507,223,774,592
  5. Step 5: Solve for x
    x = 386,867,507,223,774,592/402,795,528
  6. Step 6: Final answer
    x = 960,456,311.78

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.