Home / 987,399.78-1,362,603.90-534,690.78

Finding the Fourth Proportional to 987,399.78, 1,362,603.90 and 534,690.78

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Solution

The fourth proportional to 987,399.78, 1,362,603.90 and 534,690.78 is: 737,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,399.78 : 1,362,603.90 = 534,690.78 : x
  2. Step 2: Convert to fraction form
    987,399.78/1,362,603.90 = 534,690.78/x
  3. Step 3: Cross multiply
    987,399.78x = 1,362,603.90 × 534,690.78
  4. Step 4: Simplify right side
    987,399.78x = 728,571,742,122.04
  5. Step 5: Solve for x
    x = 728,571,742,122.04/987,399.78
  6. Step 6: Final answer
    x = 737,869.05

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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.