Home / 667,246.80-1,000,870.20-430,856.40

Finding the Fourth Proportional to 667,246.80, 1,000,870.20 and 430,856.40

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Solution

The fourth proportional to 667,246.80, 1,000,870.20 and 430,856.40 is: 646,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,246.80 : 1,000,870.20 = 430,856.40 : x
  2. Step 2: Convert to fraction form
    667,246.80/1,000,870.20 = 430,856.40/x
  3. Step 3: Cross multiply
    667,246.80x = 1,000,870.20 × 430,856.40
  4. Step 4: Simplify right side
    667,246.80x = 431,231,331,239.28
  5. Step 5: Solve for x
    x = 431,231,331,239.28/667,246.80
  6. Step 6: Final answer
    x = 646,284.60

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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.