Home / 790,019.78-1,090,219.54-427,435.68

Finding the Fourth Proportional to 790,019.78, 1,090,219.54 and 427,435.68

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Solution

The fourth proportional to 790,019.78, 1,090,219.54 and 427,435.68 is: 589,857.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,019.78 : 1,090,219.54 = 427,435.68 : x
  2. Step 2: Convert to fraction form
    790,019.78/1,090,219.54 = 427,435.68/x
  3. Step 3: Cross multiply
    790,019.78x = 1,090,219.54 × 427,435.68
  4. Step 4: Simplify right side
    790,019.78x = 465,998,730,429.19
  5. Step 5: Solve for x
    x = 465,998,730,429.19/790,019.78
  6. Step 6: Final answer
    x = 589,857.04

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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.