Home / 538,945.74-743,797.72-402,743.20

Finding the Fourth Proportional to 538,945.74, 743,797.72 and 402,743.20

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Solution

The fourth proportional to 538,945.74, 743,797.72 and 402,743.20 is: 555,824.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,945.74 : 743,797.72 = 402,743.20 : x
  2. Step 2: Convert to fraction form
    538,945.74/743,797.72 = 402,743.20/x
  3. Step 3: Cross multiply
    538,945.74x = 743,797.72 × 402,743.20
  4. Step 4: Simplify right side
    538,945.74x = 299,559,473,905.50
  5. Step 5: Solve for x
    x = 299,559,473,905.50/538,945.74
  6. Step 6: Final answer
    x = 555,824.92

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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.