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Finding the Fourth Proportional to 561,036.76, 774,233.57 and 306,387.94

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Solution

The fourth proportional to 561,036.76, 774,233.57 and 306,387.94 is: 422,816.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,036.76 : 774,233.57 = 306,387.94 : x
  2. Step 2: Convert to fraction form
    561,036.76/774,233.57 = 306,387.94/x
  3. Step 3: Cross multiply
    561,036.76x = 774,233.57 × 306,387.94
  4. Step 4: Simplify right side
    561,036.76x = 237,215,828,591.15
  5. Step 5: Solve for x
    x = 237,215,828,591.15/561,036.76
  6. Step 6: Final answer
    x = 422,816.91

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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.