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Finding the Fourth Proportional to 561,522.60, 774,899.46 and 306,873.79

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Solution

The fourth proportional to 561,522.60, 774,899.46 and 306,873.79 is: 423,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,522.60 : 774,899.46 = 306,873.79 : x
  2. Step 2: Convert to fraction form
    561,522.60/774,899.46 = 306,873.79/x
  3. Step 3: Cross multiply
    561,522.60x = 774,899.46 × 306,873.79
  4. Step 4: Simplify right side
    561,522.60x = 237,796,334,159.15
  5. Step 5: Solve for x
    x = 237,796,334,159.15/561,522.60
  6. Step 6: Final answer
    x = 423,484.89

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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.