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Finding the Fourth Proportional to 555,496.91, 766,601.48 and 313,789.67

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Solution

The fourth proportional to 555,496.91, 766,601.48 and 313,789.67 is: 433,038.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,496.91 : 766,601.48 = 313,789.67 : x
  2. Step 2: Convert to fraction form
    555,496.91/766,601.48 = 313,789.67/x
  3. Step 3: Cross multiply
    555,496.91x = 766,601.48 × 313,789.67
  4. Step 4: Simplify right side
    555,496.91x = 240,551,625,430.71
  5. Step 5: Solve for x
    x = 240,551,625,430.71/555,496.91
  6. Step 6: Final answer
    x = 433,038.64

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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.