Home / 901,218,846.54-1,243,665,547.29-499,331,129.43

Finding the Fourth Proportional to 901,218,846.54, 1,243,665,547.29 and 499,331,129.43

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Solution

The fourth proportional to 901,218,846.54, 1,243,665,547.29 and 499,331,129.43 is: 689,067,838.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,218,846.54 : 1,243,665,547.29 = 499,331,129.43 : x
  2. Step 2: Convert to fraction form
    901,218,846.54/1,243,665,547.29 = 499,331,129.43/x
  3. Step 3: Cross multiply
    901,218,846.54x = 1,243,665,547.29 × 499,331,129.43
  4. Step 4: Simplify right side
    901,218,846.54x = 621,000,922,361,494,784
  5. Step 5: Solve for x
    x = 621,000,922,361,494,784/901,218,846.54
  6. Step 6: Final answer
    x = 689,067,838.23

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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.