Home / 818,867.43-1,130,121.14-492,286.16

Finding the Fourth Proportional to 818,867.43, 1,130,121.14 and 492,286.16

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Solution

The fourth proportional to 818,867.43, 1,130,121.14 and 492,286.16 is: 679,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,867.43 : 1,130,121.14 = 492,286.16 : x
  2. Step 2: Convert to fraction form
    818,867.43/1,130,121.14 = 492,286.16/x
  3. Step 3: Cross multiply
    818,867.43x = 1,130,121.14 × 492,286.16
  4. Step 4: Simplify right side
    818,867.43x = 556,342,996,709.29
  5. Step 5: Solve for x
    x = 556,342,996,709.29/818,867.43
  6. Step 6: Final answer
    x = 679,405.45

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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.