Home / 672,087.40-1,008,422.70-339,663.40

Finding the Fourth Proportional to 672,087.40, 1,008,422.70 and 339,663.40

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Solution

The fourth proportional to 672,087.40, 1,008,422.70 and 339,663.40 is: 509,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,087.40 : 1,008,422.70 = 339,663.40 : x
  2. Step 2: Convert to fraction form
    672,087.40/1,008,422.70 = 339,663.40/x
  3. Step 3: Cross multiply
    672,087.40x = 1,008,422.70 × 339,663.40
  4. Step 4: Simplify right side
    672,087.40x = 342,524,282,919.18
  5. Step 5: Solve for x
    x = 342,524,282,919.18/672,087.40
  6. Step 6: Final answer
    x = 509,642.47

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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.