Home / 815,338.09-1,124,985.40-493,041.43

Finding the Fourth Proportional to 815,338.09, 1,124,985.40 and 493,041.43

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Solution

The fourth proportional to 815,338.09, 1,124,985.40 and 493,041.43 is: 680,287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,338.09 : 1,124,985.40 = 493,041.43 : x
  2. Step 2: Convert to fraction form
    815,338.09/1,124,985.40 = 493,041.43/x
  3. Step 3: Cross multiply
    815,338.09x = 1,124,985.40 × 493,041.43
  4. Step 4: Simplify right side
    815,338.09x = 554,664,410,345.12
  5. Step 5: Solve for x
    x = 554,664,410,345.12/815,338.09
  6. Step 6: Final answer
    x = 680,287.62

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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.