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Finding the Fourth Proportional to 489,904,321.90, 734,856,482.85 and 368,971,969.90

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Solution

The fourth proportional to 489,904,321.90, 734,856,482.85 and 368,971,969.90 is: 553,457,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,904,321.90 : 734,856,482.85 = 368,971,969.90 : x
  2. Step 2: Convert to fraction form
    489,904,321.90/734,856,482.85 = 368,971,969.90/x
  3. Step 3: Cross multiply
    489,904,321.90x = 734,856,482.85 × 368,971,969.90
  4. Step 4: Simplify right side
    489,904,321.90x = 271,141,444,070,950,048
  5. Step 5: Solve for x
    x = 271,141,444,070,950,048/489,904,321.90
  6. Step 6: Final answer
    x = 553,457,954.85

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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.