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Finding the Fourth Proportional to 719,554,797.36, 992,988,840.96 and 389,529,935.28

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Solution

The fourth proportional to 719,554,797.36, 992,988,840.96 and 389,529,935.28 is: 537,553,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,554,797.36 : 992,988,840.96 = 389,529,935.28 : x
  2. Step 2: Convert to fraction form
    719,554,797.36/992,988,840.96 = 389,529,935.28/x
  3. Step 3: Cross multiply
    719,554,797.36x = 992,988,840.96 × 389,529,935.28
  4. Step 4: Simplify right side
    719,554,797.36x = 386,798,878,952,910,976
  5. Step 5: Solve for x
    x = 386,798,878,952,910,976/719,554,797.36
  6. Step 6: Final answer
    x = 537,553,054.16

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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.