Home / 392,525,986.40-588,788,979.60-389,838,600.80

Finding the Fourth Proportional to 392,525,986.40, 588,788,979.60 and 389,838,600.80

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Solution

The fourth proportional to 392,525,986.40, 588,788,979.60 and 389,838,600.80 is: 584,757,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,525,986.40 : 588,788,979.60 = 389,838,600.80 : x
  2. Step 2: Convert to fraction form
    392,525,986.40/588,788,979.60 = 389,838,600.80/x
  3. Step 3: Cross multiply
    392,525,986.40x = 588,788,979.60 × 389,838,600.80
  4. Step 4: Simplify right side
    392,525,986.40x = 229,532,671,973,723,744
  5. Step 5: Solve for x
    x = 229,532,671,973,723,744/392,525,986.40
  6. Step 6: Final answer
    x = 584,757,901.20

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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.