Home / 718,263.74-991,211.63-395,985.37

Finding the Fourth Proportional to 718,263.74, 991,211.63 and 395,985.37

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Solution

The fourth proportional to 718,263.74, 991,211.63 and 395,985.37 is: 546,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,263.74 : 991,211.63 = 395,985.37 : x
  2. Step 2: Convert to fraction form
    718,263.74/991,211.63 = 395,985.37/x
  3. Step 3: Cross multiply
    718,263.74x = 991,211.63 × 395,985.37
  4. Step 4: Simplify right side
    718,263.74x = 392,505,304,053.85
  5. Step 5: Solve for x
    x = 392,505,304,053.85/718,263.74
  6. Step 6: Final answer
    x = 546,464.04

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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.