Home / 578,427.20-867,122.40-515,441.60

Finding the Fourth Proportional to 578,427.20, 867,122.40 and 515,441.60

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Solution

The fourth proportional to 578,427.20, 867,122.40 and 515,441.60 is: 772,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,427.20 : 867,122.40 = 515,441.60 : x
  2. Step 2: Convert to fraction form
    578,427.20/867,122.40 = 515,441.60/x
  3. Step 3: Cross multiply
    578,427.20x = 867,122.40 × 515,441.60
  4. Step 4: Simplify right side
    578,427.20x = 446,950,957,251.84
  5. Step 5: Solve for x
    x = 446,950,957,251.84/578,427.20
  6. Step 6: Final answer
    x = 772,700.45

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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.