Home / 690,891.55-1,036,919.61-291,818.72

Finding the Fourth Proportional to 690,891.55, 1,036,919.61 and 291,818.72

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Solution

The fourth proportional to 690,891.55, 1,036,919.61 and 291,818.72 is: 437,974.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,891.55 : 1,036,919.61 = 291,818.72 : x
  2. Step 2: Convert to fraction form
    690,891.55/1,036,919.61 = 291,818.72/x
  3. Step 3: Cross multiply
    690,891.55x = 1,036,919.61 × 291,818.72
  4. Step 4: Simplify right side
    690,891.55x = 302,592,553,333.10
  5. Step 5: Solve for x
    x = 302,592,553,333.10/690,891.55
  6. Step 6: Final answer
    x = 437,974.03

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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.