Home / 398,909,509.96-598,597,434.38-288,135,947.92

Finding the Fourth Proportional to 398,909,509.96, 598,597,434.38 and 288,135,947.92

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Solution

The fourth proportional to 398,909,509.96, 598,597,434.38 and 288,135,947.92 is: 432,372,342.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,909,509.96 : 598,597,434.38 = 288,135,947.92 : x
  2. Step 2: Convert to fraction form
    398,909,509.96/598,597,434.38 = 288,135,947.92/x
  3. Step 3: Cross multiply
    398,909,509.96x = 598,597,434.38 × 288,135,947.92
  4. Step 4: Simplify right side
    398,909,509.96x = 172,477,439,177,561,312
  5. Step 5: Solve for x
    x = 172,477,439,177,561,312/398,909,509.96
  6. Step 6: Final answer
    x = 432,372,342.28

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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.