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Finding the Fourth Proportional to 655,858.08, 981,565.10 and 403,298.54

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Solution

The fourth proportional to 655,858.08, 981,565.10 and 403,298.54 is: 603,581.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,858.08 : 981,565.10 = 403,298.54 : x
  2. Step 2: Convert to fraction form
    655,858.08/981,565.10 = 403,298.54/x
  3. Step 3: Cross multiply
    655,858.08x = 981,565.10 × 403,298.54
  4. Step 4: Simplify right side
    655,858.08x = 395,863,771,744.95
  5. Step 5: Solve for x
    x = 395,863,771,744.95/655,858.08
  6. Step 6: Final answer
    x = 603,581.45

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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.