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Finding the Fourth Proportional to 660,803.64, 911,964.82 and 370,410.58

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Solution

The fourth proportional to 660,803.64, 911,964.82 and 370,410.58 is: 511,197.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,803.64 : 911,964.82 = 370,410.58 : x
  2. Step 2: Convert to fraction form
    660,803.64/911,964.82 = 370,410.58/x
  3. Step 3: Cross multiply
    660,803.64x = 911,964.82 × 370,410.58
  4. Step 4: Simplify right side
    660,803.64x = 337,801,417,915.80
  5. Step 5: Solve for x
    x = 337,801,417,915.80/660,803.64
  6. Step 6: Final answer
    x = 511,197.88

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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.