Home / 28,513,619.20-42,770,428.80-8,320,902.40

Finding the Fourth Proportional to 28,513,619.20, 42,770,428.80 and 8,320,902.40

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Solution

The fourth proportional to 28,513,619.20, 42,770,428.80 and 8,320,902.40 is: 12,481,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513,619.20 : 42,770,428.80 = 8,320,902.40 : x
  2. Step 2: Convert to fraction form
    28,513,619.20/42,770,428.80 = 8,320,902.40/x
  3. Step 3: Cross multiply
    28,513,619.20x = 42,770,428.80 × 8,320,902.40
  4. Step 4: Simplify right side
    28,513,619.20x = 355,888,563,650,949.12
  5. Step 5: Solve for x
    x = 355,888,563,650,949.12/28,513,619.20
  6. Step 6: Final answer
    x = 12,481,353.60

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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.