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Finding the Fourth Proportional to 640,493.34, 960,705.36 and 324,942.12

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Solution

The fourth proportional to 640,493.34, 960,705.36 and 324,942.12 is: 487,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,493.34 : 960,705.36 = 324,942.12 : x
  2. Step 2: Convert to fraction form
    640,493.34/960,705.36 = 324,942.12/x
  3. Step 3: Cross multiply
    640,493.34x = 960,705.36 × 324,942.12
  4. Step 4: Simplify right side
    640,493.34x = 312,173,636,373.76
  5. Step 5: Solve for x
    x = 312,173,636,373.76/640,493.34
  6. Step 6: Final answer
    x = 487,395.60

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1.5x scale

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.