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Finding the Fourth Proportional to 561,460.32, 774,810.72 and 306,806.88

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Solution

The fourth proportional to 561,460.32, 774,810.72 and 306,806.88 is: 423,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,460.32 : 774,810.72 = 306,806.88 : x
  2. Step 2: Convert to fraction form
    561,460.32/774,810.72 = 306,806.88/x
  3. Step 3: Cross multiply
    561,460.32x = 774,810.72 × 306,806.88
  4. Step 4: Simplify right side
    561,460.32x = 237,717,259,593.75
  5. Step 5: Solve for x
    x = 237,717,259,593.75/561,460.32
  6. Step 6: Final answer
    x = 423,391.02

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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.