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Finding the Fourth Proportional to 455,430.40, 682,562.40 and 349,725.40

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Solution

The fourth proportional to 455,430.40, 682,562.40 and 349,725.40 is: 524,140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,430.40 : 682,562.40 = 349,725.40 : x
  2. Step 2: Convert to fraction form
    455,430.40/682,562.40 = 349,725.40/x
  3. Step 3: Cross multiply
    455,430.40x = 682,562.40 × 349,725.40
  4. Step 4: Simplify right side
    455,430.40x = 238,709,408,364.96
  5. Step 5: Solve for x
    x = 238,709,408,364.96/455,430.40
  6. Step 6: Final answer
    x = 524,140.26

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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.