Home / 720,569,864.98-1,080,466,298.79-388,754,725.78

Finding the Fourth Proportional to 720,569,864.98, 1,080,466,298.79 and 388,754,725.78

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Solution

The fourth proportional to 720,569,864.98, 1,080,466,298.79 and 388,754,725.78 is: 582,922,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,569,864.98 : 1,080,466,298.79 = 388,754,725.78 : x
  2. Step 2: Convert to fraction form
    720,569,864.98/1,080,466,298.79 = 388,754,725.78/x
  3. Step 3: Cross multiply
    720,569,864.98x = 1,080,466,298.79 × 388,754,725.78
  4. Step 4: Simplify right side
    720,569,864.98x = 420,036,379,700,637,952
  5. Step 5: Solve for x
    x = 420,036,379,700,637,952/720,569,864.98
  6. Step 6: Final answer
    x = 582,922,489.71

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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.