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Finding the Fourth Proportional to 607,138.74, 838,595.43 and 454,857.93

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Solution

The fourth proportional to 607,138.74, 838,595.43 and 454,857.93 is: 628,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,138.74 : 838,595.43 = 454,857.93 : x
  2. Step 2: Convert to fraction form
    607,138.74/838,595.43 = 454,857.93/x
  3. Step 3: Cross multiply
    607,138.74x = 838,595.43 × 454,857.93
  4. Step 4: Simplify right side
    607,138.74x = 381,441,781,397.26
  5. Step 5: Solve for x
    x = 381,441,781,397.26/607,138.74
  6. Step 6: Final answer
    x = 628,261.31

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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.