Home / 775,513.77-1,070,193.65-431,342.28

Finding the Fourth Proportional to 775,513.77, 1,070,193.65 and 431,342.28

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Solution

The fourth proportional to 775,513.77, 1,070,193.65 and 431,342.28 is: 595,243.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,513.77 : 1,070,193.65 = 431,342.28 : x
  2. Step 2: Convert to fraction form
    775,513.77/1,070,193.65 = 431,342.28/x
  3. Step 3: Cross multiply
    775,513.77x = 1,070,193.65 × 431,342.28
  4. Step 4: Simplify right side
    775,513.77x = 461,619,772,506.57
  5. Step 5: Solve for x
    x = 461,619,772,506.57/775,513.77
  6. Step 6: Final answer
    x = 595,243.81

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Half scale
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Double scale
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Similar ratio
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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.