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Finding the Fourth Proportional to 581,608.60, 803,231.78 and 518,208.70

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Solution

The fourth proportional to 581,608.60, 803,231.78 and 518,208.70 is: 715,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,608.60 : 803,231.78 = 518,208.70 : x
  2. Step 2: Convert to fraction form
    581,608.60/803,231.78 = 518,208.70/x
  3. Step 3: Cross multiply
    581,608.60x = 803,231.78 × 518,208.70
  4. Step 4: Simplify right side
    581,608.60x = 416,241,696,512.49
  5. Step 5: Solve for x
    x = 416,241,696,512.49/581,608.60
  6. Step 6: Final answer
    x = 715,673.21

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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.