Home / 677,366.46-1,015,920.09-340,313.72

Finding the Fourth Proportional to 677,366.46, 1,015,920.09 and 340,313.72

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Solution

The fourth proportional to 677,366.46, 1,015,920.09 and 340,313.72 is: 510,405.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,366.46 : 1,015,920.09 = 340,313.72 : x
  2. Step 2: Convert to fraction form
    677,366.46/1,015,920.09 = 340,313.72/x
  3. Step 3: Cross multiply
    677,366.46x = 1,015,920.09 × 340,313.72
  4. Step 4: Simplify right side
    677,366.46x = 345,731,539,971.03
  5. Step 5: Solve for x
    x = 345,731,539,971.03/677,366.46
  6. Step 6: Final answer
    x = 510,405.46

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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.