Home / 431,487,256.95-647,242,944.67-140,354,380.79

Finding the Fourth Proportional to 431,487,256.95, 647,242,944.67 and 140,354,380.79

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Solution

The fourth proportional to 431,487,256.95, 647,242,944.67 and 140,354,380.79 is: 210,535,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,487,256.95 : 647,242,944.67 = 140,354,380.79 : x
  2. Step 2: Convert to fraction form
    431,487,256.95/647,242,944.67 = 140,354,380.79/x
  3. Step 3: Cross multiply
    431,487,256.95x = 647,242,944.67 × 140,354,380.79
  4. Step 4: Simplify right side
    431,487,256.95x = 90,843,382,716,617,856
  5. Step 5: Solve for x
    x = 90,843,382,716,617,856/431,487,256.95
  6. Step 6: Final answer
    x = 210,535,493.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.