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Finding the Fourth Proportional to 557,511.39, 769,361.49 and 302,864.40

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Solution

The fourth proportional to 557,511.39, 769,361.49 and 302,864.40 is: 417,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,511.39 : 769,361.49 = 302,864.40 : x
  2. Step 2: Convert to fraction form
    557,511.39/769,361.49 = 302,864.40/x
  3. Step 3: Cross multiply
    557,511.39x = 769,361.49 × 302,864.40
  4. Step 4: Simplify right side
    557,511.39x = 233,012,206,051.96
  5. Step 5: Solve for x
    x = 233,012,206,051.96/557,511.39
  6. Step 6: Final answer
    x = 417,950.58

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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.