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Finding the Fourth Proportional to 455,855.40, 683,783.10 and 455,855.40

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Solution

The fourth proportional to 455,855.40, 683,783.10 and 455,855.40 is: 683,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,855.40 : 683,783.10 = 455,855.40 : x
  2. Step 2: Convert to fraction form
    455,855.40/683,783.10 = 455,855.40/x
  3. Step 3: Cross multiply
    455,855.40x = 683,783.10 × 455,855.40
  4. Step 4: Simplify right side
    455,855.40x = 311,706,218,563.74
  5. Step 5: Solve for x
    x = 311,706,218,563.74/455,855.40
  6. Step 6: Final answer
    x = 683,783.10

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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.