Home / 398,627,417.80-597,941,126.70-389,669,465.80

Finding the Fourth Proportional to 398,627,417.80, 597,941,126.70 and 389,669,465.80

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Solution

The fourth proportional to 398,627,417.80, 597,941,126.70 and 389,669,465.80 is: 584,504,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,627,417.80 : 597,941,126.70 = 389,669,465.80 : x
  2. Step 2: Convert to fraction form
    398,627,417.80/597,941,126.70 = 389,669,465.80/x
  3. Step 3: Cross multiply
    398,627,417.80x = 597,941,126.70 × 389,669,465.80
  4. Step 4: Simplify right side
    398,627,417.80x = 232,999,399,421,039,136
  5. Step 5: Solve for x
    x = 232,999,399,421,039,136/398,627,417.80
  6. Step 6: Final answer
    x = 584,504,198.70

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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.