Home / 645,313.39-890,495.90-358,827.33

Finding the Fourth Proportional to 645,313.39, 890,495.90 and 358,827.33

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Solution

The fourth proportional to 645,313.39, 890,495.90 and 358,827.33 is: 495,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,313.39 : 890,495.90 = 358,827.33 : x
  2. Step 2: Convert to fraction form
    645,313.39/890,495.90 = 358,827.33/x
  3. Step 3: Cross multiply
    645,313.39x = 890,495.90 × 358,827.33
  4. Step 4: Simplify right side
    645,313.39x = 319,534,261,720.47
  5. Step 5: Solve for x
    x = 319,534,261,720.47/645,313.39
  6. Step 6: Final answer
    x = 495,161.37

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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.