Home / 820,399,924.36-1,132,151,950.95-449,121,955.74

Finding the Fourth Proportional to 820,399,924.36, 1,132,151,950.95 and 449,121,955.74

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Solution

The fourth proportional to 820,399,924.36, 1,132,151,950.95 and 449,121,955.74 is: 619,788,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399,924.36 : 1,132,151,950.95 = 449,121,955.74 : x
  2. Step 2: Convert to fraction form
    820,399,924.36/1,132,151,950.95 = 449,121,955.74/x
  3. Step 3: Cross multiply
    820,399,924.36x = 1,132,151,950.95 × 449,121,955.74
  4. Step 4: Simplify right side
    820,399,924.36x = 508,474,298,397,614,144
  5. Step 5: Solve for x
    x = 508,474,298,397,614,144/820,399,924.36
  6. Step 6: Final answer
    x = 619,788,329.20

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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.