Home / 1,326,528.05-1,989,561.02-427,969.71

Finding the Fourth Proportional to 1,326,528.05, 1,989,561.02 and 427,969.71

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Solution

The fourth proportional to 1,326,528.05, 1,989,561.02 and 427,969.71 is: 641,880.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,528.05 : 1,989,561.02 = 427,969.71 : x
  2. Step 2: Convert to fraction form
    1,326,528.05/1,989,561.02 = 427,969.71/x
  3. Step 3: Cross multiply
    1,326,528.05x = 1,989,561.02 × 427,969.71
  4. Step 4: Simplify right side
    1,326,528.05x = 851,471,850,616.86
  5. Step 5: Solve for x
    x = 851,471,850,616.86/1,326,528.05
  6. Step 6: Final answer
    x = 641,880.02

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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.