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Finding the Fourth Proportional to 718,259.58, 991,190.25 and 412,343.28

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Solution

The fourth proportional to 718,259.58, 991,190.25 and 412,343.28 is: 569,029.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,259.58 : 991,190.25 = 412,343.28 : x
  2. Step 2: Convert to fraction form
    718,259.58/991,190.25 = 412,343.28/x
  3. Step 3: Cross multiply
    718,259.58x = 991,190.25 × 412,343.28
  4. Step 4: Simplify right side
    718,259.58x = 408,710,638,789.02
  5. Step 5: Solve for x
    x = 408,710,638,789.02/718,259.58
  6. Step 6: Final answer
    x = 569,029.15

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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.