Home / 776,780.28-1,071,803.34-490,692.60

Finding the Fourth Proportional to 776,780.28, 1,071,803.34 and 490,692.60

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Solution

The fourth proportional to 776,780.28, 1,071,803.34 and 490,692.60 is: 677,058.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,780.28 : 1,071,803.34 = 490,692.60 : x
  2. Step 2: Convert to fraction form
    776,780.28/1,071,803.34 = 490,692.60/x
  3. Step 3: Cross multiply
    776,780.28x = 1,071,803.34 × 490,692.60
  4. Step 4: Simplify right side
    776,780.28x = 525,925,967,593.28
  5. Step 5: Solve for x
    x = 525,925,967,593.28/776,780.28
  6. Step 6: Final answer
    x = 677,058.86

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1.5x scale

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.