Home / 676,870.60-1,015,305.90-638,163.40

Finding the Fourth Proportional to 676,870.60, 1,015,305.90 and 638,163.40

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Solution

The fourth proportional to 676,870.60, 1,015,305.90 and 638,163.40 is: 957,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,870.60 : 1,015,305.90 = 638,163.40 : x
  2. Step 2: Convert to fraction form
    676,870.60/1,015,305.90 = 638,163.40/x
  3. Step 3: Cross multiply
    676,870.60x = 1,015,305.90 × 638,163.40
  4. Step 4: Simplify right side
    676,870.60x = 647,931,065,184.06
  5. Step 5: Solve for x
    x = 647,931,065,184.06/676,870.60
  6. Step 6: Final answer
    x = 957,245.10

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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.