Home / 687,964.20-1,031,946.30-369,099.60

Finding the Fourth Proportional to 687,964.20, 1,031,946.30 and 369,099.60

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Solution

The fourth proportional to 687,964.20, 1,031,946.30 and 369,099.60 is: 553,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,964.20 : 1,031,946.30 = 369,099.60 : x
  2. Step 2: Convert to fraction form
    687,964.20/1,031,946.30 = 369,099.60/x
  3. Step 3: Cross multiply
    687,964.20x = 1,031,946.30 × 369,099.60
  4. Step 4: Simplify right side
    687,964.20x = 380,890,966,551.48
  5. Step 5: Solve for x
    x = 380,890,966,551.48/687,964.20
  6. Step 6: Final answer
    x = 553,649.40

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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.