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Finding the Fourth Proportional to 455,455.90, 682,600.65 and 349,750.90

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Solution

The fourth proportional to 455,455.90, 682,600.65 and 349,750.90 is: 524,178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,455.90 : 682,600.65 = 349,750.90 : x
  2. Step 2: Convert to fraction form
    455,455.90/682,600.65 = 349,750.90/x
  3. Step 3: Cross multiply
    455,455.90x = 682,600.65 × 349,750.90
  4. Step 4: Simplify right side
    455,455.90x = 238,740,191,678.09
  5. Step 5: Solve for x
    x = 238,740,191,678.09/455,455.90
  6. Step 6: Final answer
    x = 524,178.50

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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.