Home / 645,055.40-966,776.70-329,637.80

Finding the Fourth Proportional to 645,055.40, 966,776.70 and 329,637.80

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Solution

The fourth proportional to 645,055.40, 966,776.70 and 329,637.80 is: 494,044.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,055.40 : 966,776.70 = 329,637.80 : x
  2. Step 2: Convert to fraction form
    645,055.40/966,776.70 = 329,637.80/x
  3. Step 3: Cross multiply
    645,055.40x = 966,776.70 × 329,637.80
  4. Step 4: Simplify right side
    645,055.40x = 318,686,144,479.26
  5. Step 5: Solve for x
    x = 318,686,144,479.26/645,055.40
  6. Step 6: Final answer
    x = 494,044.61

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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.