Home / 687,966.20-1,031,949.30-369,101.60

Finding the Fourth Proportional to 687,966.20, 1,031,949.30 and 369,101.60

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Solution

The fourth proportional to 687,966.20, 1,031,949.30 and 369,101.60 is: 553,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,966.20 : 1,031,949.30 = 369,101.60 : x
  2. Step 2: Convert to fraction form
    687,966.20/1,031,949.30 = 369,101.60/x
  3. Step 3: Cross multiply
    687,966.20x = 1,031,949.30 × 369,101.60
  4. Step 4: Simplify right side
    687,966.20x = 380,894,137,748.88
  5. Step 5: Solve for x
    x = 380,894,137,748.88/687,966.20
  6. Step 6: Final answer
    x = 553,652.40

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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.