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Finding the Fourth Proportional to 640,922.70, 960,116.85 and 562,125.90

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Solution

The fourth proportional to 640,922.70, 960,116.85 and 562,125.90 is: 842,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,922.70 : 960,116.85 = 562,125.90 : x
  2. Step 2: Convert to fraction form
    640,922.70/960,116.85 = 562,125.90/x
  3. Step 3: Cross multiply
    640,922.70x = 960,116.85 × 562,125.90
  4. Step 4: Simplify right side
    640,922.70x = 539,706,548,411.42
  5. Step 5: Solve for x
    x = 539,706,548,411.42/640,922.70
  6. Step 6: Final answer
    x = 842,077.44

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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.