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Finding the Fourth Proportional to 28,267,319.20, 39,663,826.40 and 28,267,319.20

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Solution

The fourth proportional to 28,267,319.20, 39,663,826.40 and 28,267,319.20 is: 39,663,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,267,319.20 : 39,663,826.40 = 28,267,319.20 : x
  2. Step 2: Convert to fraction form
    28,267,319.20/39,663,826.40 = 28,267,319.20/x
  3. Step 3: Cross multiply
    28,267,319.20x = 39,663,826.40 × 28,267,319.20
  4. Step 4: Simplify right side
    28,267,319.20x = 1,121,190,041,542,186.75
  5. Step 5: Solve for x
    x = 1,121,190,041,542,186.75/28,267,319.20
  6. Step 6: Final answer
    x = 39,663,826.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.