Home / 756,420.40-1,134,630.60-689,935.60

Finding the Fourth Proportional to 756,420.40, 1,134,630.60 and 689,935.60

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Solution

The fourth proportional to 756,420.40, 1,134,630.60 and 689,935.60 is: 1,034,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,420.40 : 1,134,630.60 = 689,935.60 : x
  2. Step 2: Convert to fraction form
    756,420.40/1,134,630.60 = 689,935.60/x
  3. Step 3: Cross multiply
    756,420.40x = 1,134,630.60 × 689,935.60
  4. Step 4: Simplify right side
    756,420.40x = 782,822,043,789.36
  5. Step 5: Solve for x
    x = 782,822,043,789.36/756,420.40
  6. Step 6: Final answer
    x = 1,034,903.40

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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.