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Finding the Fourth Proportional to 515,730.48, 773,594.64 and 290,988.96

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Solution

The fourth proportional to 515,730.48, 773,594.64 and 290,988.96 is: 436,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,730.48 : 773,594.64 = 290,988.96 : x
  2. Step 2: Convert to fraction form
    515,730.48/773,594.64 = 290,988.96/x
  3. Step 3: Cross multiply
    515,730.48x = 773,594.64 × 290,988.96
  4. Step 4: Simplify right side
    515,730.48x = 225,107,499,755.17
  5. Step 5: Solve for x
    x = 225,107,499,755.17/515,730.48
  6. Step 6: Final answer
    x = 436,482.83

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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.