Home / 687,655.88-1,031,885.42-288,265.96

Finding the Fourth Proportional to 687,655.88, 1,031,885.42 and 288,265.96

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Solution

The fourth proportional to 687,655.88, 1,031,885.42 and 288,265.96 is: 432,567.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,655.88 : 1,031,885.42 = 288,265.96 : x
  2. Step 2: Convert to fraction form
    687,655.88/1,031,885.42 = 288,265.96/x
  3. Step 3: Cross multiply
    687,655.88x = 1,031,885.42 × 288,265.96
  4. Step 4: Simplify right side
    687,655.88x = 297,457,441,206.30
  5. Step 5: Solve for x
    x = 297,457,441,206.30/687,655.88
  6. Step 6: Final answer
    x = 432,567.29

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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.