Home / 686,567.09-1,029,709.89-259,955.74

Finding the Fourth Proportional to 686,567.09, 1,029,709.89 and 259,955.74

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Solution

The fourth proportional to 686,567.09, 1,029,709.89 and 259,955.74 is: 389,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,567.09 : 1,029,709.89 = 259,955.74 : x
  2. Step 2: Convert to fraction form
    686,567.09/1,029,709.89 = 259,955.74/x
  3. Step 3: Cross multiply
    686,567.09x = 1,029,709.89 × 259,955.74
  4. Step 4: Simplify right side
    686,567.09x = 267,678,996,440.27
  5. Step 5: Solve for x
    x = 267,678,996,440.27/686,567.09
  6. Step 6: Final answer
    x = 389,880.32

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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.