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Finding the Fourth Proportional to 607,694.80, 838,639.56 and 381,465.04

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Solution

The fourth proportional to 607,694.80, 838,639.56 and 381,465.04 is: 526,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,694.80 : 838,639.56 = 381,465.04 : x
  2. Step 2: Convert to fraction form
    607,694.80/838,639.56 = 381,465.04/x
  3. Step 3: Cross multiply
    607,694.80x = 838,639.56 × 381,465.04
  4. Step 4: Simplify right side
    607,694.80x = 319,911,673,300.98
  5. Step 5: Solve for x
    x = 319,911,673,300.98/607,694.80
  6. Step 6: Final answer
    x = 526,434.77

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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.