Home / 664,871,998.80-997,307,998.20-551,625,790.80

Finding the Fourth Proportional to 664,871,998.80, 997,307,998.20 and 551,625,790.80

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Solution

The fourth proportional to 664,871,998.80, 997,307,998.20 and 551,625,790.80 is: 827,438,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,871,998.80 : 997,307,998.20 = 551,625,790.80 : x
  2. Step 2: Convert to fraction form
    664,871,998.80/997,307,998.20 = 551,625,790.80/x
  3. Step 3: Cross multiply
    664,871,998.80x = 997,307,998.20 × 551,625,790.80
  4. Step 4: Simplify right side
    664,871,998.80x = 550,140,813,178,239,936
  5. Step 5: Solve for x
    x = 550,140,813,178,239,936/664,871,998.80
  6. Step 6: Final answer
    x = 827,438,686.20

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Half scale
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Double scale
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Similar ratio
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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.