Home / 826,489,479.71-1,140,555,502.80-455,211,511.09

Finding the Fourth Proportional to 826,489,479.71, 1,140,555,502.80 and 455,211,511.09

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Solution

The fourth proportional to 826,489,479.71, 1,140,555,502.80 and 455,211,511.09 is: 628,191,896.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,489,479.71 : 1,140,555,502.80 = 455,211,511.09 : x
  2. Step 2: Convert to fraction form
    826,489,479.71/1,140,555,502.80 = 455,211,511.09/x
  3. Step 3: Cross multiply
    826,489,479.71x = 1,140,555,502.80 × 455,211,511.09
  4. Step 4: Simplify right side
    826,489,479.71x = 519,193,993,911,602,688
  5. Step 5: Solve for x
    x = 519,193,993,911,602,688/826,489,479.71
  6. Step 6: Final answer
    x = 628,191,896.76

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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.