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Finding the Fourth Proportional to 557,725, 769,639.44 and 303,070.72

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Solution

The fourth proportional to 557,725, 769,639.44 and 303,070.72 is: 418,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,725 : 769,639.44 = 303,070.72 : x
  2. Step 2: Convert to fraction form
    557,725/769,639.44 = 303,070.72/x
  3. Step 3: Cross multiply
    557,725x = 769,639.44 × 303,070.72
  4. Step 4: Simplify right side
    557,725x = 233,255,179,221.20
  5. Step 5: Solve for x
    x = 233,255,179,221.20/557,725
  6. Step 6: Final answer
    x = 418,226.15

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1.5x scale

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.