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Finding the Fourth Proportional to 484,574,656.80, 726,861,985.20 and 291,082,893.60

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Solution

The fourth proportional to 484,574,656.80, 726,861,985.20 and 291,082,893.60 is: 436,624,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,574,656.80 : 726,861,985.20 = 291,082,893.60 : x
  2. Step 2: Convert to fraction form
    484,574,656.80/726,861,985.20 = 291,082,893.60/x
  3. Step 3: Cross multiply
    484,574,656.80x = 726,861,985.20 × 291,082,893.60
  4. Step 4: Simplify right side
    484,574,656.80x = 211,577,089,899,856,416
  5. Step 5: Solve for x
    x = 211,577,089,899,856,416/484,574,656.80
  6. Step 6: Final answer
    x = 436,624,340.40

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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.