Home / 463,780.20-696,515.10-405,719.40

Finding the Fourth Proportional to 463,780.20, 696,515.10 and 405,719.40

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Solution

The fourth proportional to 463,780.20, 696,515.10 and 405,719.40 is: 609,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,780.20 : 696,515.10 = 405,719.40 : x
  2. Step 2: Convert to fraction form
    463,780.20/696,515.10 = 405,719.40/x
  3. Step 3: Cross multiply
    463,780.20x = 696,515.10 × 405,719.40
  4. Step 4: Simplify right side
    463,780.20x = 282,589,688,462.94
  5. Step 5: Solve for x
    x = 282,589,688,462.94/463,780.20
  6. Step 6: Final answer
    x = 609,318.14

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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.