Home / 686,564.60-1,031,013.30-509,271.80

Finding the Fourth Proportional to 686,564.60, 1,031,013.30 and 509,271.80

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Solution

The fourth proportional to 686,564.60, 1,031,013.30 and 509,271.80 is: 764,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,564.60 : 1,031,013.30 = 509,271.80 : x
  2. Step 2: Convert to fraction form
    686,564.60/1,031,013.30 = 509,271.80/x
  3. Step 3: Cross multiply
    686,564.60x = 1,031,013.30 × 509,271.80
  4. Step 4: Simplify right side
    686,564.60x = 525,065,999,114.94
  5. Step 5: Solve for x
    x = 525,065,999,114.94/686,564.60
  6. Step 6: Final answer
    x = 764,772.90

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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.