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Finding the Fourth Proportional to 432,613.54, 648,920.31 and 282,979.63

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Solution

The fourth proportional to 432,613.54, 648,920.31 and 282,979.63 is: 424,469.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,613.54 : 648,920.31 = 282,979.63 : x
  2. Step 2: Convert to fraction form
    432,613.54/648,920.31 = 282,979.63/x
  3. Step 3: Cross multiply
    432,613.54x = 648,920.31 × 282,979.63
  4. Step 4: Simplify right side
    432,613.54x = 183,631,229,223.29
  5. Step 5: Solve for x
    x = 183,631,229,223.29/432,613.54
  6. Step 6: Final answer
    x = 424,469.45

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Double scale
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Similar ratio
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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.