Home / 911,403,278.64-1,257,740,377.11-493,715,563.38

Finding the Fourth Proportional to 911,403,278.64, 1,257,740,377.11 and 493,715,563.38

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Solution

The fourth proportional to 911,403,278.64, 1,257,740,377.11 and 493,715,563.38 is: 681,329,564.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,403,278.64 : 1,257,740,377.11 = 493,715,563.38 : x
  2. Step 2: Convert to fraction form
    911,403,278.64/1,257,740,377.11 = 493,715,563.38/x
  3. Step 3: Cross multiply
    911,403,278.64x = 1,257,740,377.11 × 493,715,563.38
  4. Step 4: Simplify right side
    911,403,278.64x = 620,965,998,870,637,312
  5. Step 5: Solve for x
    x = 620,965,998,870,637,312/911,403,278.64
  6. Step 6: Final answer
    x = 681,329,564.45

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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.