Home / 398,599,344.80-597,899,017.20-389,641,392.80

Finding the Fourth Proportional to 398,599,344.80, 597,899,017.20 and 389,641,392.80

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Solution

The fourth proportional to 398,599,344.80, 597,899,017.20 and 389,641,392.80 is: 584,462,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,599,344.80 : 597,899,017.20 = 389,641,392.80 : x
  2. Step 2: Convert to fraction form
    398,599,344.80/597,899,017.20 = 389,641,392.80/x
  3. Step 3: Cross multiply
    398,599,344.80x = 597,899,017.20 × 389,641,392.80
  4. Step 4: Simplify right side
    398,599,344.80x = 232,966,205,815,559,168
  5. Step 5: Solve for x
    x = 232,966,205,815,559,168/398,599,344.80
  6. Step 6: Final answer
    x = 584,462,089.20

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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.