Home / 645,251.29-890,441.37-358,768.87

Finding the Fourth Proportional to 645,251.29, 890,441.37 and 358,768.87

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Solution

The fourth proportional to 645,251.29, 890,441.37 and 358,768.87 is: 495,098.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,251.29 : 890,441.37 = 358,768.87 : x
  2. Step 2: Convert to fraction form
    645,251.29/890,441.37 = 358,768.87/x
  3. Step 3: Cross multiply
    645,251.29x = 890,441.37 × 358,768.87
  4. Step 4: Simplify right side
    645,251.29x = 319,462,644,116.15
  5. Step 5: Solve for x
    x = 319,462,644,116.15/645,251.29
  6. Step 6: Final answer
    x = 495,098.03

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1.5x scale

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.