Home / 386,280,138.80-579,420,208.20-343,281,969.20

Finding the Fourth Proportional to 386,280,138.80, 579,420,208.20 and 343,281,969.20

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Solution

The fourth proportional to 386,280,138.80, 579,420,208.20 and 343,281,969.20 is: 514,922,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,280,138.80 : 579,420,208.20 = 343,281,969.20 : x
  2. Step 2: Convert to fraction form
    386,280,138.80/579,420,208.20 = 343,281,969.20/x
  3. Step 3: Cross multiply
    386,280,138.80x = 579,420,208.20 × 343,281,969.20
  4. Step 4: Simplify right side
    386,280,138.80x = 198,904,510,065,169,984
  5. Step 5: Solve for x
    x = 198,904,510,065,169,984/386,280,138.80
  6. Step 6: Final answer
    x = 514,922,953.80

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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.