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Finding the Fourth Proportional to 524,903,557.80, 787,355,336.70 and 409,261,996.20

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Solution

The fourth proportional to 524,903,557.80, 787,355,336.70 and 409,261,996.20 is: 613,892,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,903,557.80 : 787,355,336.70 = 409,261,996.20 : x
  2. Step 2: Convert to fraction form
    524,903,557.80/787,355,336.70 = 409,261,996.20/x
  3. Step 3: Cross multiply
    524,903,557.80x = 787,355,336.70 × 409,261,996.20
  4. Step 4: Simplify right side
    524,903,557.80x = 322,234,616,816,565,120
  5. Step 5: Solve for x
    x = 322,234,616,816,565,120/524,903,557.80
  6. Step 6: Final answer
    x = 613,892,994.30

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Double scale
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Similar ratio
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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.