Home / 684,354,631.20-1,026,531,946.80-644,043,847.20

Finding the Fourth Proportional to 684,354,631.20, 1,026,531,946.80 and 644,043,847.20

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Solution

The fourth proportional to 684,354,631.20, 1,026,531,946.80 and 644,043,847.20 is: 966,065,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,354,631.20 : 1,026,531,946.80 = 644,043,847.20 : x
  2. Step 2: Convert to fraction form
    684,354,631.20/1,026,531,946.80 = 644,043,847.20/x
  3. Step 3: Cross multiply
    684,354,631.20x = 1,026,531,946.80 × 644,043,847.20
  4. Step 4: Simplify right side
    684,354,631.20x = 661,131,584,290,777,728
  5. Step 5: Solve for x
    x = 661,131,584,290,777,728/684,354,631.20
  6. Step 6: Final answer
    x = 966,065,770.80

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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.