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Finding the Fourth Proportional to 538,461.93, 743,080.38 and 309,000.96

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Solution

The fourth proportional to 538,461.93, 743,080.38 and 309,000.96 is: 426,423.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,461.93 : 743,080.38 = 309,000.96 : x
  2. Step 2: Convert to fraction form
    538,461.93/743,080.38 = 309,000.96/x
  3. Step 3: Cross multiply
    538,461.93x = 743,080.38 × 309,000.96
  4. Step 4: Simplify right side
    538,461.93x = 229,612,550,777.17
  5. Step 5: Solve for x
    x = 229,612,550,777.17/538,461.93
  6. Step 6: Final answer
    x = 426,423.00

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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.