Home / 455,909.20-683,863.80-434,136.40

Finding the Fourth Proportional to 455,909.20, 683,863.80 and 434,136.40

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Solution

The fourth proportional to 455,909.20, 683,863.80 and 434,136.40 is: 651,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,909.20 : 683,863.80 = 434,136.40 : x
  2. Step 2: Convert to fraction form
    455,909.20/683,863.80 = 434,136.40/x
  3. Step 3: Cross multiply
    455,909.20x = 683,863.80 × 434,136.40
  4. Step 4: Simplify right side
    455,909.20x = 296,890,168,222.32
  5. Step 5: Solve for x
    x = 296,890,168,222.32/455,909.20
  6. Step 6: Final answer
    x = 651,204.60

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Similar ratio
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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.