Home / 686,143.20-1,029,214.80-461,611.20

Finding the Fourth Proportional to 686,143.20, 1,029,214.80 and 461,611.20

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Solution

The fourth proportional to 686,143.20, 1,029,214.80 and 461,611.20 is: 692,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,143.20 : 1,029,214.80 = 461,611.20 : x
  2. Step 2: Convert to fraction form
    686,143.20/1,029,214.80 = 461,611.20/x
  3. Step 3: Cross multiply
    686,143.20x = 1,029,214.80 × 461,611.20
  4. Step 4: Simplify right side
    686,143.20x = 475,097,078,885.76
  5. Step 5: Solve for x
    x = 475,097,078,885.76/686,143.20
  6. Step 6: Final answer
    x = 692,416.80

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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.