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Finding the Fourth Proportional to 430,572,185,999.80, 645,858,278,999.70 and 430,572,185,999.80

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Solution

The fourth proportional to 430,572,185,999.80, 645,858,278,999.70 and 430,572,185,999.80 is: 645,858,278,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,572,185,999.80 : 645,858,278,999.70 = 430,572,185,999.80 : x
  2. Step 2: Convert to fraction form
    430,572,185,999.80/645,858,278,999.70 = 430,572,185,999.80/x
  3. Step 3: Cross multiply
    430,572,185,999.80x = 645,858,278,999.70 × 430,572,185,999.80
  4. Step 4: Simplify right side
    430,572,185,999.80x = 278,088,611,034,969,524,928,512
  5. Step 5: Solve for x
    x = 278,088,611,034,969,524,928,512/430,572,185,999.80
  6. Step 6: Final answer
    x = 645,858,278,999.70

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1.5x scale

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.