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Finding the Fourth Proportional to 880,784,703.30, 1,214,354,559.30 and 721,427,764.58

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Solution

The fourth proportional to 880,784,703.30, 1,214,354,559.30 and 721,427,764.58 is: 994,646,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,784,703.30 : 1,214,354,559.30 = 721,427,764.58 : x
  2. Step 2: Convert to fraction form
    880,784,703.30/1,214,354,559.30 = 721,427,764.58/x
  3. Step 3: Cross multiply
    880,784,703.30x = 1,214,354,559.30 × 721,427,764.58
  4. Step 4: Simplify right side
    880,784,703.30x = 876,069,095,123,330,048
  5. Step 5: Solve for x
    x = 876,069,095,123,330,048/880,784,703.30
  6. Step 6: Final answer
    x = 994,646,128.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.