Home / 686,708.80-1,030,905.60-433,988.80

Finding the Fourth Proportional to 686,708.80, 1,030,905.60 and 433,988.80

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Solution

The fourth proportional to 686,708.80, 1,030,905.60 and 433,988.80 is: 651,515.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,708.80 : 1,030,905.60 = 433,988.80 : x
  2. Step 2: Convert to fraction form
    686,708.80/1,030,905.60 = 433,988.80/x
  3. Step 3: Cross multiply
    686,708.80x = 1,030,905.60 × 433,988.80
  4. Step 4: Simplify right side
    686,708.80x = 447,401,484,257.28
  5. Step 5: Solve for x
    x = 447,401,484,257.28/686,708.80
  6. Step 6: Final answer
    x = 651,515.58

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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.