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Finding the Fourth Proportional to 28,339,602.40, 42,509,403.60 and 11,302,904.80

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Solution

The fourth proportional to 28,339,602.40, 42,509,403.60 and 11,302,904.80 is: 16,954,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339,602.40 : 42,509,403.60 = 11,302,904.80 : x
  2. Step 2: Convert to fraction form
    28,339,602.40/42,509,403.60 = 11,302,904.80/x
  3. Step 3: Cross multiply
    28,339,602.40x = 42,509,403.60 × 11,302,904.80
  4. Step 4: Simplify right side
    28,339,602.40x = 480,479,741,995,577.31
  5. Step 5: Solve for x
    x = 480,479,741,995,577.31/28,339,602.40
  6. Step 6: Final answer
    x = 16,954,357.20

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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.