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Finding the Fourth Proportional to 802,668.16, 1,107,703.20 and 453,780.80

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Solution

The fourth proportional to 802,668.16, 1,107,703.20 and 453,780.80 is: 626,229.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,668.16 : 1,107,703.20 = 453,780.80 : x
  2. Step 2: Convert to fraction form
    802,668.16/1,107,703.20 = 453,780.80/x
  3. Step 3: Cross multiply
    802,668.16x = 1,107,703.20 × 453,780.80
  4. Step 4: Simplify right side
    802,668.16x = 502,654,444,258.56
  5. Step 5: Solve for x
    x = 502,654,444,258.56/802,668.16
  6. Step 6: Final answer
    x = 626,229.45

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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.