Home / 686,527.20-1,029,790.80-434,584.80

Finding the Fourth Proportional to 686,527.20, 1,029,790.80 and 434,584.80

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Solution

The fourth proportional to 686,527.20, 1,029,790.80 and 434,584.80 is: 651,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,527.20 : 1,029,790.80 = 434,584.80 : x
  2. Step 2: Convert to fraction form
    686,527.20/1,029,790.80 = 434,584.80/x
  3. Step 3: Cross multiply
    686,527.20x = 1,029,790.80 × 434,584.80
  4. Step 4: Simplify right side
    686,527.20x = 447,531,428,859.84
  5. Step 5: Solve for x
    x = 447,531,428,859.84/686,527.20
  6. Step 6: Final answer
    x = 651,877.20

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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.