Home / 402,893,998.80-604,340,998.20-280,449,992.40

Finding the Fourth Proportional to 402,893,998.80, 604,340,998.20 and 280,449,992.40

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Solution

The fourth proportional to 402,893,998.80, 604,340,998.20 and 280,449,992.40 is: 420,674,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,893,998.80 : 604,340,998.20 = 280,449,992.40 : x
  2. Step 2: Convert to fraction form
    402,893,998.80/604,340,998.20 = 280,449,992.40/x
  3. Step 3: Cross multiply
    402,893,998.80x = 604,340,998.20 × 280,449,992.40
  4. Step 4: Simplify right side
    402,893,998.80x = 169,487,428,352,198,400
  5. Step 5: Solve for x
    x = 169,487,428,352,198,400/402,893,998.80
  6. Step 6: Final answer
    x = 420,674,988.60

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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.