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Finding the Fourth Proportional to 802,732.80, 1,107,820.96 and 445,036.80

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Solution

The fourth proportional to 802,732.80, 1,107,820.96 and 445,036.80 is: 614,178.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,732.80 : 1,107,820.96 = 445,036.80 : x
  2. Step 2: Convert to fraction form
    802,732.80/1,107,820.96 = 445,036.80/x
  3. Step 3: Cross multiply
    802,732.80x = 1,107,820.96 × 445,036.80
  4. Step 4: Simplify right side
    802,732.80x = 493,021,095,011.33
  5. Step 5: Solve for x
    x = 493,021,095,011.33/802,732.80
  6. Step 6: Final answer
    x = 614,178.34

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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.