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Finding the Fourth Proportional to 285,210,009.70, 427,815,014.55 and 285,210,009.70

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Solution

The fourth proportional to 285,210,009.70, 427,815,014.55 and 285,210,009.70 is: 427,815,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,210,009.70 : 427,815,014.55 = 285,210,009.70 : x
  2. Step 2: Convert to fraction form
    285,210,009.70/427,815,014.55 = 285,210,009.70/x
  3. Step 3: Cross multiply
    285,210,009.70x = 427,815,014.55 × 285,210,009.70
  4. Step 4: Simplify right side
    285,210,009.70x = 122,017,124,449,611,136
  5. Step 5: Solve for x
    x = 122,017,124,449,611,136/285,210,009.70
  6. Step 6: Final answer
    x = 427,815,014.55

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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.