Home / 686,710.80-1,030,908.60-433,990.80

Finding the Fourth Proportional to 686,710.80, 1,030,908.60 and 433,990.80

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Solution

The fourth proportional to 686,710.80, 1,030,908.60 and 433,990.80 is: 651,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,710.80 : 1,030,908.60 = 433,990.80 : x
  2. Step 2: Convert to fraction form
    686,710.80/1,030,908.60 = 433,990.80/x
  3. Step 3: Cross multiply
    686,710.80x = 1,030,908.60 × 433,990.80
  4. Step 4: Simplify right side
    686,710.80x = 447,404,848,040.88
  5. Step 5: Solve for x
    x = 447,404,848,040.88/686,710.80
  6. Step 6: Final answer
    x = 651,518.58

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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.