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Finding the Fourth Proportional to 453,857.76, 679,965.42 and 326,810.16

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Solution

The fourth proportional to 453,857.76, 679,965.42 and 326,810.16 is: 489,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,857.76 : 679,965.42 = 326,810.16 : x
  2. Step 2: Convert to fraction form
    453,857.76/679,965.42 = 326,810.16/x
  3. Step 3: Cross multiply
    453,857.76x = 679,965.42 × 326,810.16
  4. Step 4: Simplify right side
    453,857.76x = 222,219,607,704.67
  5. Step 5: Solve for x
    x = 222,219,607,704.67/453,857.76
  6. Step 6: Final answer
    x = 489,623.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.