Home / 1,209,055.38-1,813,378.95-399,189.30

Finding the Fourth Proportional to 1,209,055.38, 1,813,378.95 and 399,189.30

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Solution

The fourth proportional to 1,209,055.38, 1,813,378.95 and 399,189.30 is: 598,716.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,055.38 : 1,813,378.95 = 399,189.30 : x
  2. Step 2: Convert to fraction form
    1,209,055.38/1,813,378.95 = 399,189.30/x
  3. Step 3: Cross multiply
    1,209,055.38x = 1,813,378.95 × 399,189.30
  4. Step 4: Simplify right side
    1,209,055.38x = 723,881,473,685.24
  5. Step 5: Solve for x
    x = 723,881,473,685.24/1,209,055.38
  6. Step 6: Final answer
    x = 598,716.56

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.