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Finding the Fourth Proportional to 458,502.80, 634,171.56 and 405,510.80

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Solution

The fourth proportional to 458,502.80, 634,171.56 and 405,510.80 is: 560,876.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,502.80 : 634,171.56 = 405,510.80 : x
  2. Step 2: Convert to fraction form
    458,502.80/634,171.56 = 405,510.80/x
  3. Step 3: Cross multiply
    458,502.80x = 634,171.56 × 405,510.80
  4. Step 4: Simplify right side
    458,502.80x = 257,163,416,632.85
  5. Step 5: Solve for x
    x = 257,163,416,632.85/458,502.80
  6. Step 6: Final answer
    x = 560,876.44

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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.