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Finding the Fourth Proportional to 646,638.01, 892,203.08 and 425,852.51

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Solution

The fourth proportional to 646,638.01, 892,203.08 and 425,852.51 is: 587,572.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,638.01 : 892,203.08 = 425,852.51 : x
  2. Step 2: Convert to fraction form
    646,638.01/892,203.08 = 425,852.51/x
  3. Step 3: Cross multiply
    646,638.01x = 892,203.08 × 425,852.51
  4. Step 4: Simplify right side
    646,638.01x = 379,946,914,457.45
  5. Step 5: Solve for x
    x = 379,946,914,457.45/646,638.01
  6. Step 6: Final answer
    x = 587,572.82

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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.