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Finding the Fourth Proportional to 20,402,984.78, 30,604,477.16 and 20,402,984.78

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Solution

The fourth proportional to 20,402,984.78, 30,604,477.16 and 20,402,984.78 is: 30,604,477.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402,984.78 : 30,604,477.16 = 20,402,984.78 : x
  2. Step 2: Convert to fraction form
    20,402,984.78/30,604,477.16 = 20,402,984.78/x
  3. Step 3: Cross multiply
    20,402,984.78x = 30,604,477.16 × 20,402,984.78
  4. Step 4: Simplify right side
    20,402,984.78x = 624,422,681,593,322.62
  5. Step 5: Solve for x
    x = 624,422,681,593,322.62/20,402,984.78
  6. Step 6: Final answer
    x = 30,604,477.16

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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.