Home / 818,868.39-1,130,122.47-492,287.13

Finding the Fourth Proportional to 818,868.39, 1,130,122.47 and 492,287.13

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Solution

The fourth proportional to 818,868.39, 1,130,122.47 and 492,287.13 is: 679,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,868.39 : 1,130,122.47 = 492,287.13 : x
  2. Step 2: Convert to fraction form
    818,868.39/1,130,122.47 = 492,287.13/x
  3. Step 3: Cross multiply
    818,868.39x = 1,130,122.47 × 492,287.13
  4. Step 4: Simplify right side
    818,868.39x = 556,344,747,304.81
  5. Step 5: Solve for x
    x = 556,344,747,304.81/818,868.39
  6. Step 6: Final answer
    x = 679,406.79

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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.