Home / 645,110.13-890,282.37-358,635

Finding the Fourth Proportional to 645,110.13, 890,282.37 and 358,635

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Solution

The fourth proportional to 645,110.13, 890,282.37 and 358,635 is: 494,933.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,110.13 : 890,282.37 = 358,635 : x
  2. Step 2: Convert to fraction form
    645,110.13/890,282.37 = 358,635/x
  3. Step 3: Cross multiply
    645,110.13x = 890,282.37 × 358,635
  4. Step 4: Simplify right side
    645,110.13x = 319,286,417,764.95
  5. Step 5: Solve for x
    x = 319,286,417,764.95/645,110.13
  6. Step 6: Final answer
    x = 494,933.19

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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.