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Finding the Fourth Proportional to 561,387.36, 775,231.92 and 360,533.28

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Solution

The fourth proportional to 561,387.36, 775,231.92 and 360,533.28 is: 497,868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,387.36 : 775,231.92 = 360,533.28 : x
  2. Step 2: Convert to fraction form
    561,387.36/775,231.92 = 360,533.28/x
  3. Step 3: Cross multiply
    561,387.36x = 775,231.92 × 360,533.28
  4. Step 4: Simplify right side
    561,387.36x = 279,496,906,878.30
  5. Step 5: Solve for x
    x = 279,496,906,878.30/561,387.36
  6. Step 6: Final answer
    x = 497,868.19

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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.