Home / 1,438,356.21-1,984,979.24-785,017.90

Finding the Fourth Proportional to 1,438,356.21, 1,984,979.24 and 785,017.90

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Solution

The fourth proportional to 1,438,356.21, 1,984,979.24 and 785,017.90 is: 1,083,350.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,356.21 : 1,984,979.24 = 785,017.90 : x
  2. Step 2: Convert to fraction form
    1,438,356.21/1,984,979.24 = 785,017.90/x
  3. Step 3: Cross multiply
    1,438,356.21x = 1,984,979.24 × 785,017.90
  4. Step 4: Simplify right side
    1,438,356.21x = 1,558,244,234,528.40
  5. Step 5: Solve for x
    x = 1,558,244,234,528.40/1,438,356.21
  6. Step 6: Final answer
    x = 1,083,350.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.