Home / 1,321,490.75-1,823,502.51-777,506.90

Finding the Fourth Proportional to 1,321,490.75, 1,823,502.51 and 777,506.90

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Solution

The fourth proportional to 1,321,490.75, 1,823,502.51 and 777,506.90 is: 1,072,868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,490.75 : 1,823,502.51 = 777,506.90 : x
  2. Step 2: Convert to fraction form
    1,321,490.75/1,823,502.51 = 777,506.90/x
  3. Step 3: Cross multiply
    1,321,490.75x = 1,823,502.51 × 777,506.90
  4. Step 4: Simplify right side
    1,321,490.75x = 1,417,785,783,692.32
  5. Step 5: Solve for x
    x = 1,417,785,783,692.32/1,321,490.75
  6. Step 6: Final answer
    x = 1,072,868.49

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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.