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Finding the Fourth Proportional to 650,721.47, 897,989.37 and 374,978.01

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Solution

The fourth proportional to 650,721.47, 897,989.37 and 374,978.01 is: 517,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,721.47 : 897,989.37 = 374,978.01 : x
  2. Step 2: Convert to fraction form
    650,721.47/897,989.37 = 374,978.01/x
  3. Step 3: Cross multiply
    650,721.47x = 897,989.37 × 374,978.01
  4. Step 4: Simplify right side
    650,721.47x = 336,726,268,925.05
  5. Step 5: Solve for x
    x = 336,726,268,925.05/650,721.47
  6. Step 6: Final answer
    x = 517,466.05

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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.