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Finding the Fourth Proportional to 620,570,404.80, 930,855,607.20 and 275,157,374.40

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Solution

The fourth proportional to 620,570,404.80, 930,855,607.20 and 275,157,374.40 is: 412,736,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,570,404.80 : 930,855,607.20 = 275,157,374.40 : x
  2. Step 2: Convert to fraction form
    620,570,404.80/930,855,607.20 = 275,157,374.40/x
  3. Step 3: Cross multiply
    620,570,404.80x = 930,855,607.20 × 275,157,374.40
  4. Step 4: Simplify right side
    620,570,404.80x = 256,131,784,822,669,728
  5. Step 5: Solve for x
    x = 256,131,784,822,669,728/620,570,404.80
  6. Step 6: Final answer
    x = 412,736,061.60

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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.