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Finding the Fourth Proportional to 561,216.72, 774,496.08 and 306,584.32

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Solution

The fourth proportional to 561,216.72, 774,496.08 and 306,584.32 is: 423,095.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,216.72 : 774,496.08 = 306,584.32 : x
  2. Step 2: Convert to fraction form
    561,216.72/774,496.08 = 306,584.32/x
  3. Step 3: Cross multiply
    561,216.72x = 774,496.08 × 306,584.32
  4. Step 4: Simplify right side
    561,216.72x = 237,448,354,029.47
  5. Step 5: Solve for x
    x = 237,448,354,029.47/561,216.72
  6. Step 6: Final answer
    x = 423,095.65

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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.