Home / 718,263.82-991,211.70-395,985.46

Finding the Fourth Proportional to 718,263.82, 991,211.70 and 395,985.46

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Solution

The fourth proportional to 718,263.82, 991,211.70 and 395,985.46 is: 546,464.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,263.82 : 991,211.70 = 395,985.46 : x
  2. Step 2: Convert to fraction form
    718,263.82/991,211.70 = 395,985.46/x
  3. Step 3: Cross multiply
    718,263.82x = 991,211.70 × 395,985.46
  4. Step 4: Simplify right side
    718,263.82x = 392,505,420,981.88
  5. Step 5: Solve for x
    x = 392,505,420,981.88/718,263.82
  6. Step 6: Final answer
    x = 546,464.14

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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.