Home / 398,909,507.98-598,597,431.40-288,135,945.94

Finding the Fourth Proportional to 398,909,507.98, 598,597,431.40 and 288,135,945.94

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Solution

The fourth proportional to 398,909,507.98, 598,597,431.40 and 288,135,945.94 is: 432,372,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,909,507.98 : 598,597,431.40 = 288,135,945.94 : x
  2. Step 2: Convert to fraction form
    398,909,507.98/598,597,431.40 = 288,135,945.94/x
  3. Step 3: Cross multiply
    398,909,507.98x = 598,597,431.40 × 288,135,945.94
  4. Step 4: Simplify right side
    398,909,507.98x = 172,477,437,133,693,248
  5. Step 5: Solve for x
    x = 172,477,437,133,693,248/398,909,507.98
  6. Step 6: Final answer
    x = 432,372,339.30

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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.