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Finding the Fourth Proportional to 555,421.95, 766,484.64 and 300,773.34

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Solution

The fourth proportional to 555,421.95, 766,484.64 and 300,773.34 is: 415,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,421.95 : 766,484.64 = 300,773.34 : x
  2. Step 2: Convert to fraction form
    555,421.95/766,484.64 = 300,773.34/x
  3. Step 3: Cross multiply
    555,421.95x = 766,484.64 × 300,773.34
  4. Step 4: Simplify right side
    555,421.95x = 230,538,145,231.50
  5. Step 5: Solve for x
    x = 230,538,145,231.50/555,421.95
  6. Step 6: Final answer
    x = 415,068.48

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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.