Home / 557,381.28-769,160.38-315,665.60

Finding the Fourth Proportional to 557,381.28, 769,160.38 and 315,665.60

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Solution

The fourth proportional to 557,381.28, 769,160.38 and 315,665.60 is: 435,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,381.28 : 769,160.38 = 315,665.60 : x
  2. Step 2: Convert to fraction form
    557,381.28/769,160.38 = 315,665.60/x
  3. Step 3: Cross multiply
    557,381.28x = 769,160.38 × 315,665.60
  4. Step 4: Simplify right side
    557,381.28x = 242,797,472,848.93
  5. Step 5: Solve for x
    x = 242,797,472,848.93/557,381.28
  6. Step 6: Final answer
    x = 435,603.92

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1.5x scale

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.