Home / 1,318,123.80-1,977,404.40-519,431.40

Finding the Fourth Proportional to 1,318,123.80, 1,977,404.40 and 519,431.40

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Solution

The fourth proportional to 1,318,123.80, 1,977,404.40 and 519,431.40 is: 779,233.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,123.80 : 1,977,404.40 = 519,431.40 : x
  2. Step 2: Convert to fraction form
    1,318,123.80/1,977,404.40 = 519,431.40/x
  3. Step 3: Cross multiply
    1,318,123.80x = 1,977,404.40 × 519,431.40
  4. Step 4: Simplify right side
    1,318,123.80x = 1,027,125,935,858.16
  5. Step 5: Solve for x
    x = 1,027,125,935,858.16/1,318,123.80
  6. Step 6: Final answer
    x = 779,233.28

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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.