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Finding the Fourth Proportional to 515,054.40, 772,581.60 and 409,300.80

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Solution

The fourth proportional to 515,054.40, 772,581.60 and 409,300.80 is: 613,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,054.40 : 772,581.60 = 409,300.80 : x
  2. Step 2: Convert to fraction form
    515,054.40/772,581.60 = 409,300.80/x
  3. Step 3: Cross multiply
    515,054.40x = 772,581.60 × 409,300.80
  4. Step 4: Simplify right side
    515,054.40x = 316,218,266,945.28
  5. Step 5: Solve for x
    x = 316,218,266,945.28/515,054.40
  6. Step 6: Final answer
    x = 613,951.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.