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Finding the Fourth Proportional to 641,437.92, 885,915.36 and 437,136.48

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Solution

The fourth proportional to 641,437.92, 885,915.36 and 437,136.48 is: 603,746.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,437.92 : 885,915.36 = 437,136.48 : x
  2. Step 2: Convert to fraction form
    641,437.92/885,915.36 = 437,136.48/x
  3. Step 3: Cross multiply
    641,437.92x = 885,915.36 × 437,136.48
  4. Step 4: Simplify right side
    641,437.92x = 387,265,922,048.33
  5. Step 5: Solve for x
    x = 387,265,922,048.33/641,437.92
  6. Step 6: Final answer
    x = 603,746.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.