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Finding the Fourth Proportional to 613,804,586.20, 920,706,879.30 and 368,916,573.40

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Solution

The fourth proportional to 613,804,586.20, 920,706,879.30 and 368,916,573.40 is: 553,374,860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,804,586.20 : 920,706,879.30 = 368,916,573.40 : x
  2. Step 2: Convert to fraction form
    613,804,586.20/920,706,879.30 = 368,916,573.40/x
  3. Step 3: Cross multiply
    613,804,586.20x = 920,706,879.30 × 368,916,573.40
  4. Step 4: Simplify right side
    613,804,586.20x = 339,664,027,017,163,328
  5. Step 5: Solve for x
    x = 339,664,027,017,163,328/613,804,586.20
  6. Step 6: Final answer
    x = 553,374,860.10

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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.