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Finding the Fourth Proportional to 555,490.31, 766,575.90 and 300,842.51

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Solution

The fourth proportional to 555,490.31, 766,575.90 and 300,842.51 is: 415,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,490.31 : 766,575.90 = 300,842.51 : x
  2. Step 2: Convert to fraction form
    555,490.31/766,575.90 = 300,842.51/x
  3. Step 3: Cross multiply
    555,490.31x = 766,575.90 × 300,842.51
  4. Step 4: Simplify right side
    555,490.31x = 230,618,617,861.51
  5. Step 5: Solve for x
    x = 230,618,617,861.51/555,490.31
  6. Step 6: Final answer
    x = 415,162.27

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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.