Home / 719,554,801.36-992,988,846.48-389,529,939.28

Finding the Fourth Proportional to 719,554,801.36, 992,988,846.48 and 389,529,939.28

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Solution

The fourth proportional to 719,554,801.36, 992,988,846.48 and 389,529,939.28 is: 537,553,059.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,554,801.36 : 992,988,846.48 = 389,529,939.28 : x
  2. Step 2: Convert to fraction form
    719,554,801.36/992,988,846.48 = 389,529,939.28/x
  3. Step 3: Cross multiply
    719,554,801.36x = 992,988,846.48 × 389,529,939.28
  4. Step 4: Simplify right side
    719,554,801.36x = 386,798,885,075,071,616
  5. Step 5: Solve for x
    x = 386,798,885,075,071,616/719,554,801.36
  6. Step 6: Final answer
    x = 537,553,059.68

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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.