Home / 918,876,315.87-1,268,156,519.85-522,458,702.96

Finding the Fourth Proportional to 918,876,315.87, 1,268,156,519.85 and 522,458,702.96

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Solution

The fourth proportional to 918,876,315.87, 1,268,156,519.85 and 522,458,702.96 is: 721,053,964.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,876,315.87 : 1,268,156,519.85 = 522,458,702.96 : x
  2. Step 2: Convert to fraction form
    918,876,315.87/1,268,156,519.85 = 522,458,702.96/x
  3. Step 3: Cross multiply
    918,876,315.87x = 1,268,156,519.85 × 522,458,702.96
  4. Step 4: Simplify right side
    918,876,315.87x = 662,559,410,504,757,632
  5. Step 5: Solve for x
    x = 662,559,410,504,757,632/918,876,315.87
  6. Step 6: Final answer
    x = 721,053,964.57

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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.