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Finding the Fourth Proportional to 555,720.71, 766,895.36 and 301,071.92

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Solution

The fourth proportional to 555,720.71, 766,895.36 and 301,071.92 is: 415,479.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,720.71 : 766,895.36 = 301,071.92 : x
  2. Step 2: Convert to fraction form
    555,720.71/766,895.36 = 301,071.92/x
  3. Step 3: Cross multiply
    555,720.71x = 766,895.36 × 301,071.92
  4. Step 4: Simplify right side
    555,720.71x = 230,890,653,134.46
  5. Step 5: Solve for x
    x = 230,890,653,134.46/555,720.71
  6. Step 6: Final answer
    x = 415,479.67

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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.