Home / 538,909.74-743,700.69-309,464.28

Finding the Fourth Proportional to 538,909.74, 743,700.69 and 309,464.28

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Solution

The fourth proportional to 538,909.74, 743,700.69 and 309,464.28 is: 427,063.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,909.74 : 743,700.69 = 309,464.28 : x
  2. Step 2: Convert to fraction form
    538,909.74/743,700.69 = 309,464.28/x
  3. Step 3: Cross multiply
    538,909.74x = 743,700.69 × 309,464.28
  4. Step 4: Simplify right side
    538,909.74x = 230,148,798,566.35
  5. Step 5: Solve for x
    x = 230,148,798,566.35/538,909.74
  6. Step 6: Final answer
    x = 427,063.72

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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.