Home / 1,585,920,489.39-2,188,442,168.51-916,908,655.87

Finding the Fourth Proportional to 1,585,920,489.39, 2,188,442,168.51 and 916,908,655.87

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Solution

The fourth proportional to 1,585,920,489.39, 2,188,442,168.51 and 916,908,655.87 is: 1,265,259,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585,920,489.39 : 2,188,442,168.51 = 916,908,655.87 : x
  2. Step 2: Convert to fraction form
    1,585,920,489.39/2,188,442,168.51 = 916,908,655.87/x
  3. Step 3: Cross multiply
    1,585,920,489.39x = 2,188,442,168.51 × 916,908,655.87
  4. Step 4: Simplify right side
    1,585,920,489.39x = 2,006,601,567,188,499,200
  5. Step 5: Solve for x
    x = 2,006,601,567,188,499,200/1,585,920,489.39
  6. Step 6: Final answer
    x = 1,265,259,879.43

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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.