Home / 818,557.12-1,129,642.86-455,980.88

Finding the Fourth Proportional to 818,557.12, 1,129,642.86 and 455,980.88

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Solution

The fourth proportional to 818,557.12, 1,129,642.86 and 455,980.88 is: 629,272.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,557.12 : 1,129,642.86 = 455,980.88 : x
  2. Step 2: Convert to fraction form
    818,557.12/1,129,642.86 = 455,980.88/x
  3. Step 3: Cross multiply
    818,557.12x = 1,129,642.86 × 455,980.88
  4. Step 4: Simplify right side
    818,557.12x = 515,095,545,388.52
  5. Step 5: Solve for x
    x = 515,095,545,388.52/818,557.12
  6. Step 6: Final answer
    x = 629,272.57

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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.