Home / 659,463,541.68-989,198,723.40-386,642,990.16

Finding the Fourth Proportional to 659,463,541.68, 989,198,723.40 and 386,642,990.16

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Solution

The fourth proportional to 659,463,541.68, 989,198,723.40 and 386,642,990.16 is: 579,966,485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,463,541.68 : 989,198,723.40 = 386,642,990.16 : x
  2. Step 2: Convert to fraction form
    659,463,541.68/989,198,723.40 = 386,642,990.16/x
  3. Step 3: Cross multiply
    659,463,541.68x = 989,198,723.40 × 386,642,990.16
  4. Step 4: Simplify right side
    659,463,541.68x = 382,466,752,277,830,784
  5. Step 5: Solve for x
    x = 382,466,752,277,830,784/659,463,541.68
  6. Step 6: Final answer
    x = 579,966,485.04

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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.