Home / 1,123,813.20-1,685,719.80-745,899.60

Finding the Fourth Proportional to 1,123,813.20, 1,685,719.80 and 745,899.60

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Solution

The fourth proportional to 1,123,813.20, 1,685,719.80 and 745,899.60 is: 1,118,849.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,813.20 : 1,685,719.80 = 745,899.60 : x
  2. Step 2: Convert to fraction form
    1,123,813.20/1,685,719.80 = 745,899.60/x
  3. Step 3: Cross multiply
    1,123,813.20x = 1,685,719.80 × 745,899.60
  4. Step 4: Simplify right side
    1,123,813.20x = 1,257,377,724,532.08
  5. Step 5: Solve for x
    x = 1,257,377,724,532.08/1,123,813.20
  6. Step 6: Final answer
    x = 1,118,849.40

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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.