Home / 869,850,403.68-1,200,433,085.56-512,633,256.78

Finding the Fourth Proportional to 869,850,403.68, 1,200,433,085.56 and 512,633,256.78

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Solution

The fourth proportional to 869,850,403.68, 1,200,433,085.56 and 512,633,256.78 is: 707,457,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,850,403.68 : 1,200,433,085.56 = 512,633,256.78 : x
  2. Step 2: Convert to fraction form
    869,850,403.68/1,200,433,085.56 = 512,633,256.78/x
  3. Step 3: Cross multiply
    869,850,403.68x = 1,200,433,085.56 × 512,633,256.78
  4. Step 4: Simplify right side
    869,850,403.68x = 615,381,922,197,087,104
  5. Step 5: Solve for x
    x = 615,381,922,197,087,104/869,850,403.68
  6. Step 6: Final answer
    x = 707,457,189.87

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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.