Home / 918,209,813.10-1,377,683,820.45-372,994,017.90

Finding the Fourth Proportional to 918,209,813.10, 1,377,683,820.45 and 372,994,017.90

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Solution

The fourth proportional to 918,209,813.10, 1,377,683,820.45 and 372,994,017.90 is: 559,640,962.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,209,813.10 : 1,377,683,820.45 = 372,994,017.90 : x
  2. Step 2: Convert to fraction form
    918,209,813.10/1,377,683,820.45 = 372,994,017.90/x
  3. Step 3: Cross multiply
    918,209,813.10x = 1,377,683,820.45 × 372,994,017.90
  4. Step 4: Simplify right side
    918,209,813.10x = 513,867,823,585,467,648
  5. Step 5: Solve for x
    x = 513,867,823,585,467,648/918,209,813.10
  6. Step 6: Final answer
    x = 559,640,962.51

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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.