Home / 820,399,911.86-1,132,151,933.66-449,121,943.24

Finding the Fourth Proportional to 820,399,911.86, 1,132,151,933.66 and 449,121,943.24

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Solution

The fourth proportional to 820,399,911.86, 1,132,151,933.66 and 449,121,943.24 is: 619,788,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399,911.86 : 1,132,151,933.66 = 449,121,943.24 : x
  2. Step 2: Convert to fraction form
    820,399,911.86/1,132,151,933.66 = 449,121,943.24/x
  3. Step 3: Cross multiply
    820,399,911.86x = 1,132,151,933.66 × 449,121,943.24
  4. Step 4: Simplify right side
    820,399,911.86x = 508,474,276,483,226,752
  5. Step 5: Solve for x
    x = 508,474,276,483,226,752/820,399,911.86
  6. Step 6: Final answer
    x = 619,788,311.93

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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.