Home / 687,229.20-1,031,621.40-406,904.40

Finding the Fourth Proportional to 687,229.20, 1,031,621.40 and 406,904.40

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Solution

The fourth proportional to 687,229.20, 1,031,621.40 and 406,904.40 is: 610,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,229.20 : 1,031,621.40 = 406,904.40 : x
  2. Step 2: Convert to fraction form
    687,229.20/1,031,621.40 = 406,904.40/x
  3. Step 3: Cross multiply
    687,229.20x = 1,031,621.40 × 406,904.40
  4. Step 4: Simplify right side
    687,229.20x = 419,771,286,794.16
  5. Step 5: Solve for x
    x = 419,771,286,794.16/687,229.20
  6. Step 6: Final answer
    x = 610,817.01

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1.5x scale

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.