Home / 640,748.84-961,518.54-325,432.04

Finding the Fourth Proportional to 640,748.84, 961,518.54 and 325,432.04

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Solution

The fourth proportional to 640,748.84, 961,518.54 and 325,432.04 is: 488,348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,748.84 : 961,518.54 = 325,432.04 : x
  2. Step 2: Convert to fraction form
    640,748.84/961,518.54 = 325,432.04/x
  3. Step 3: Cross multiply
    640,748.84x = 961,518.54 × 325,432.04
  4. Step 4: Simplify right side
    640,748.84x = 312,908,939,970.02
  5. Step 5: Solve for x
    x = 312,908,939,970.02/640,748.84
  6. Step 6: Final answer
    x = 488,348.82

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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.