Home / 390,944.11-539,224.69-358,782.61

Finding the Fourth Proportional to 390,944.11, 539,224.69 and 358,782.61

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Solution

The fourth proportional to 390,944.11, 539,224.69 and 358,782.61 is: 494,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,944.11 : 539,224.69 = 358,782.61 : x
  2. Step 2: Convert to fraction form
    390,944.11/539,224.69 = 358,782.61/x
  3. Step 3: Cross multiply
    390,944.11x = 539,224.69 × 358,782.61
  4. Step 4: Simplify right side
    390,944.11x = 193,464,441,654.64
  5. Step 5: Solve for x
    x = 193,464,441,654.64/390,944.11
  6. Step 6: Final answer
    x = 494,864.70

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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.