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Finding the Fourth Proportional to 702,005.76, 968,684.54 and 396,064.26

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Solution

The fourth proportional to 702,005.76, 968,684.54 and 396,064.26 is: 546,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,005.76 : 968,684.54 = 396,064.26 : x
  2. Step 2: Convert to fraction form
    702,005.76/968,684.54 = 396,064.26/x
  3. Step 3: Cross multiply
    702,005.76x = 968,684.54 × 396,064.26
  4. Step 4: Simplify right side
    702,005.76x = 383,661,323,528.22
  5. Step 5: Solve for x
    x = 383,661,323,528.22/702,005.76
  6. Step 6: Final answer
    x = 546,521.62

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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.