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Finding the Fourth Proportional to 414,436,859.10, 621,655,288.65 and 414,436,859.10

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Solution

The fourth proportional to 414,436,859.10, 621,655,288.65 and 414,436,859.10 is: 621,655,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,436,859.10 : 621,655,288.65 = 414,436,859.10 : x
  2. Step 2: Convert to fraction form
    414,436,859.10/621,655,288.65 = 414,436,859.10/x
  3. Step 3: Cross multiply
    414,436,859.10x = 621,655,288.65 × 414,436,859.10
  4. Step 4: Simplify right side
    414,436,859.10x = 257,636,865,271,009,888
  5. Step 5: Solve for x
    x = 257,636,865,271,009,888/414,436,859.10
  6. Step 6: Final answer
    x = 621,655,288.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.