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Finding the Fourth Proportional to 618,113.10, 928,590.72 and 436,162.58

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Solution

The fourth proportional to 618,113.10, 928,590.72 and 436,162.58 is: 655,246.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,113.10 : 928,590.72 = 436,162.58 : x
  2. Step 2: Convert to fraction form
    618,113.10/928,590.72 = 436,162.58/x
  3. Step 3: Cross multiply
    618,113.10x = 928,590.72 × 436,162.58
  4. Step 4: Simplify right side
    618,113.10x = 405,016,524,199.26
  5. Step 5: Solve for x
    x = 405,016,524,199.26/618,113.10
  6. Step 6: Final answer
    x = 655,246.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.