Home / 718,156.88-991,056.24-395,872.36

Finding the Fourth Proportional to 718,156.88, 991,056.24 and 395,872.36

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Solution

The fourth proportional to 718,156.88, 991,056.24 and 395,872.36 is: 546,303.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,156.88 : 991,056.24 = 395,872.36 : x
  2. Step 2: Convert to fraction form
    718,156.88/991,056.24 = 395,872.36/x
  3. Step 3: Cross multiply
    718,156.88x = 991,056.24 × 395,872.36
  4. Step 4: Simplify right side
    718,156.88x = 392,331,772,621.53
  5. Step 5: Solve for x
    x = 392,331,772,621.53/718,156.88
  6. Step 6: Final answer
    x = 546,303.72

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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.