Home / 442,929.85-664,394.78-440,305.45

Finding the Fourth Proportional to 442,929.85, 664,394.78 and 440,305.45

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Solution

The fourth proportional to 442,929.85, 664,394.78 and 440,305.45 is: 660,458.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,929.85 : 664,394.78 = 440,305.45 : x
  2. Step 2: Convert to fraction form
    442,929.85/664,394.78 = 440,305.45/x
  3. Step 3: Cross multiply
    442,929.85x = 664,394.78 × 440,305.45
  4. Step 4: Simplify right side
    442,929.85x = 292,536,640,384.02
  5. Step 5: Solve for x
    x = 292,536,640,384.02/442,929.85
  6. Step 6: Final answer
    x = 660,458.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.