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Finding the Fourth Proportional to 922,803.90, 1,383,221.70 and 353,965.20

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Solution

The fourth proportional to 922,803.90, 1,383,221.70 and 353,965.20 is: 530,570.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,803.90 : 1,383,221.70 = 353,965.20 : x
  2. Step 2: Convert to fraction form
    922,803.90/1,383,221.70 = 353,965.20/x
  3. Step 3: Cross multiply
    922,803.90x = 1,383,221.70 × 353,965.20
  4. Step 4: Simplify right side
    922,803.90x = 489,612,345,684.84
  5. Step 5: Solve for x
    x = 489,612,345,684.84/922,803.90
  6. Step 6: Final answer
    x = 530,570.30

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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.