Home / 645,251.79-890,442.06-358,769.37

Finding the Fourth Proportional to 645,251.79, 890,442.06 and 358,769.37

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Solution

The fourth proportional to 645,251.79, 890,442.06 and 358,769.37 is: 495,098.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,251.79 : 890,442.06 = 358,769.37 : x
  2. Step 2: Convert to fraction form
    645,251.79/890,442.06 = 358,769.37/x
  3. Step 3: Cross multiply
    645,251.79x = 890,442.06 × 358,769.37
  4. Step 4: Simplify right side
    645,251.79x = 319,463,336,887.70
  5. Step 5: Solve for x
    x = 319,463,336,887.70/645,251.79
  6. Step 6: Final answer
    x = 495,098.72

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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.