Home / 987,509.87-1,362,874.45-557,817.68

Finding the Fourth Proportional to 987,509.87, 1,362,874.45 and 557,817.68

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Solution

The fourth proportional to 987,509.87, 1,362,874.45 and 557,817.68 is: 769,851.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,509.87 : 1,362,874.45 = 557,817.68 : x
  2. Step 2: Convert to fraction form
    987,509.87/1,362,874.45 = 557,817.68/x
  3. Step 3: Cross multiply
    987,509.87x = 1,362,874.45 × 557,817.68
  4. Step 4: Simplify right side
    987,509.87x = 760,235,465,842.92
  5. Step 5: Solve for x
    x = 760,235,465,842.92/987,509.87
  6. Step 6: Final answer
    x = 769,851.01

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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.