Home / 790,578.69-1,090,998.34-428,002.30

Finding the Fourth Proportional to 790,578.69, 1,090,998.34 and 428,002.30

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Solution

The fourth proportional to 790,578.69, 1,090,998.34 and 428,002.30 is: 590,643.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,578.69 : 1,090,998.34 = 428,002.30 : x
  2. Step 2: Convert to fraction form
    790,578.69/1,090,998.34 = 428,002.30/x
  3. Step 3: Cross multiply
    790,578.69x = 1,090,998.34 × 428,002.30
  4. Step 4: Simplify right side
    790,578.69x = 466,949,798,816.18
  5. Step 5: Solve for x
    x = 466,949,798,816.18/790,578.69
  6. Step 6: Final answer
    x = 590,643.04

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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.