Home / 818,556.87-1,129,642.51-455,980.63

Finding the Fourth Proportional to 818,556.87, 1,129,642.51 and 455,980.63

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Solution

The fourth proportional to 818,556.87, 1,129,642.51 and 455,980.63 is: 629,272.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,556.87 : 1,129,642.51 = 455,980.63 : x
  2. Step 2: Convert to fraction form
    818,556.87/1,129,642.51 = 455,980.63/x
  3. Step 3: Cross multiply
    818,556.87x = 1,129,642.51 × 455,980.63
  4. Step 4: Simplify right side
    818,556.87x = 515,095,103,384.58
  5. Step 5: Solve for x
    x = 515,095,103,384.58/818,556.87
  6. Step 6: Final answer
    x = 629,272.23

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Double scale
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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.