Home / 987,509.12-1,362,873.41-557,816.93

Finding the Fourth Proportional to 987,509.12, 1,362,873.41 and 557,816.93

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Solution

The fourth proportional to 987,509.12, 1,362,873.41 and 557,816.93 is: 769,849.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,509.12 : 1,362,873.41 = 557,816.93 : x
  2. Step 2: Convert to fraction form
    987,509.12/1,362,873.41 = 557,816.93/x
  3. Step 3: Cross multiply
    987,509.12x = 1,362,873.41 × 557,816.93
  4. Step 4: Simplify right side
    987,509.12x = 760,233,862,281.69
  5. Step 5: Solve for x
    x = 760,233,862,281.69/987,509.12
  6. Step 6: Final answer
    x = 769,849.97

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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.