Home / 687,675.60-1,031,513.40-288,183.60

Finding the Fourth Proportional to 687,675.60, 1,031,513.40 and 288,183.60

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Solution

The fourth proportional to 687,675.60, 1,031,513.40 and 288,183.60 is: 432,275.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,675.60 : 1,031,513.40 = 288,183.60 : x
  2. Step 2: Convert to fraction form
    687,675.60/1,031,513.40 = 288,183.60/x
  3. Step 3: Cross multiply
    687,675.60x = 1,031,513.40 × 288,183.60
  4. Step 4: Simplify right side
    687,675.60x = 297,265,245,060.24
  5. Step 5: Solve for x
    x = 297,265,245,060.24/687,675.60
  6. Step 6: Final answer
    x = 432,275.40

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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.