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Finding the Fourth Proportional to 680,730.57, 939,430.56 and 374,829.41

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Solution

The fourth proportional to 680,730.57, 939,430.56 and 374,829.41 is: 517,276.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,730.57 : 939,430.56 = 374,829.41 : x
  2. Step 2: Convert to fraction form
    680,730.57/939,430.56 = 374,829.41/x
  3. Step 3: Cross multiply
    680,730.57x = 939,430.56 × 374,829.41
  4. Step 4: Simplify right side
    680,730.57x = 352,126,200,192.19
  5. Step 5: Solve for x
    x = 352,126,200,192.19/680,730.57
  6. Step 6: Final answer
    x = 517,276.91

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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.