Home / 557,285.04-769,288.78-376,242.20

Finding the Fourth Proportional to 557,285.04, 769,288.78 and 376,242.20

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Solution

The fourth proportional to 557,285.04, 769,288.78 and 376,242.20 is: 519,373.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,285.04 : 769,288.78 = 376,242.20 : x
  2. Step 2: Convert to fraction form
    557,285.04/769,288.78 = 376,242.20/x
  3. Step 3: Cross multiply
    557,285.04x = 769,288.78 × 376,242.20
  4. Step 4: Simplify right side
    557,285.04x = 289,438,899,176.07
  5. Step 5: Solve for x
    x = 289,438,899,176.07/557,285.04
  6. Step 6: Final answer
    x = 519,373.17

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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.