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Finding the Fourth Proportional to 444,323.84, 612,779.28 and 315,006.80

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Solution

The fourth proportional to 444,323.84, 612,779.28 and 315,006.80 is: 434,434.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,323.84 : 612,779.28 = 315,006.80 : x
  2. Step 2: Convert to fraction form
    444,323.84/612,779.28 = 315,006.80/x
  3. Step 3: Cross multiply
    444,323.84x = 612,779.28 × 315,006.80
  4. Step 4: Simplify right side
    444,323.84x = 193,029,640,099.10
  5. Step 5: Solve for x
    x = 193,029,640,099.10/444,323.84
  6. Step 6: Final answer
    x = 434,434.58

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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.