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Finding the Fourth Proportional to 555,374.89, 766,421.04 and 300,726.10

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Solution

The fourth proportional to 555,374.89, 766,421.04 and 300,726.10 is: 415,004.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,374.89 : 766,421.04 = 300,726.10 : x
  2. Step 2: Convert to fraction form
    555,374.89/766,421.04 = 300,726.10/x
  3. Step 3: Cross multiply
    555,374.89x = 766,421.04 × 300,726.10
  4. Step 4: Simplify right side
    555,374.89x = 230,482,810,317.14
  5. Step 5: Solve for x
    x = 230,482,810,317.14/555,374.89
  6. Step 6: Final answer
    x = 415,004.02

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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.