Home / 766,860,006.80-1,150,290,010.20-644,416,000.40

Finding the Fourth Proportional to 766,860,006.80, 1,150,290,010.20 and 644,416,000.40

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Solution

The fourth proportional to 766,860,006.80, 1,150,290,010.20 and 644,416,000.40 is: 966,624,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,860,006.80 : 1,150,290,010.20 = 644,416,000.40 : x
  2. Step 2: Convert to fraction form
    766,860,006.80/1,150,290,010.20 = 644,416,000.40/x
  3. Step 3: Cross multiply
    766,860,006.80x = 1,150,290,010.20 × 644,416,000.40
  4. Step 4: Simplify right side
    766,860,006.80x = 741,265,287,673,159,168
  5. Step 5: Solve for x
    x = 741,265,287,673,159,168/766,860,006.80
  6. Step 6: Final answer
    x = 966,624,000.60

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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.