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Finding the Fourth Proportional to 538,911.65, 743,513.13 and 345,475.59

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Solution

The fourth proportional to 538,911.65, 743,513.13 and 345,475.59 is: 476,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,911.65 : 743,513.13 = 345,475.59 : x
  2. Step 2: Convert to fraction form
    538,911.65/743,513.13 = 345,475.59/x
  3. Step 3: Cross multiply
    538,911.65x = 743,513.13 × 345,475.59
  4. Step 4: Simplify right side
    538,911.65x = 256,865,637,259.50
  5. Step 5: Solve for x
    x = 256,865,637,259.50/538,911.65
  6. Step 6: Final answer
    x = 476,637.76

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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.