Home / 398,560,419.20-597,840,628.80-289,721,302.40

Finding the Fourth Proportional to 398,560,419.20, 597,840,628.80 and 289,721,302.40

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Solution

The fourth proportional to 398,560,419.20, 597,840,628.80 and 289,721,302.40 is: 434,581,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,560,419.20 : 597,840,628.80 = 289,721,302.40 : x
  2. Step 2: Convert to fraction form
    398,560,419.20/597,840,628.80 = 289,721,302.40/x
  3. Step 3: Cross multiply
    398,560,419.20x = 597,840,628.80 × 289,721,302.40
  4. Step 4: Simplify right side
    398,560,419.20x = 173,207,165,603,570,912
  5. Step 5: Solve for x
    x = 173,207,165,603,570,912/398,560,419.20
  6. Step 6: Final answer
    x = 434,581,953.60

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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.