Home / 918,209,764.60-1,377,683,747.70-372,993,969.40

Finding the Fourth Proportional to 918,209,764.60, 1,377,683,747.70 and 372,993,969.40

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Solution

The fourth proportional to 918,209,764.60, 1,377,683,747.70 and 372,993,969.40 is: 559,640,889.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,209,764.60 : 1,377,683,747.70 = 372,993,969.40 : x
  2. Step 2: Convert to fraction form
    918,209,764.60/1,377,683,747.70 = 372,993,969.40/x
  3. Step 3: Cross multiply
    918,209,764.60x = 1,377,683,747.70 × 372,993,969.40
  4. Step 4: Simplify right side
    918,209,764.60x = 513,867,729,632,491,136
  5. Step 5: Solve for x
    x = 513,867,729,632,491,136/918,209,764.60
  6. Step 6: Final answer
    x = 559,640,889.74

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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.