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Finding the Fourth Proportional to 561,528.26, 774,907.29 and 306,879.47

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Solution

The fourth proportional to 561,528.26, 774,907.29 and 306,879.47 is: 423,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,528.26 : 774,907.29 = 306,879.47 : x
  2. Step 2: Convert to fraction form
    561,528.26/774,907.29 = 306,879.47/x
  3. Step 3: Cross multiply
    561,528.26x = 774,907.29 × 306,879.47
  4. Step 4: Simplify right side
    561,528.26x = 237,803,134,579.80
  5. Step 5: Solve for x
    x = 237,803,134,579.80/561,528.26
  6. Step 6: Final answer
    x = 423,492.73

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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.