Home / 1,318,905.80-1,977,325.20-520,784.76

Finding the Fourth Proportional to 1,318,905.80, 1,977,325.20 and 520,784.76

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Solution

The fourth proportional to 1,318,905.80, 1,977,325.20 and 520,784.76 is: 780,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,905.80 : 1,977,325.20 = 520,784.76 : x
  2. Step 2: Convert to fraction form
    1,318,905.80/1,977,325.20 = 520,784.76/x
  3. Step 3: Cross multiply
    1,318,905.80x = 1,977,325.20 × 520,784.76
  4. Step 4: Simplify right side
    1,318,905.80x = 1,029,760,829,723.95
  5. Step 5: Solve for x
    x = 1,029,760,829,723.95/1,318,905.80
  6. Step 6: Final answer
    x = 780,769.05

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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.