Home / 486,238,618.46-728,949,216.34-393,893,351.28

Finding the Fourth Proportional to 486,238,618.46, 728,949,216.34 and 393,893,351.28

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Solution

The fourth proportional to 486,238,618.46, 728,949,216.34 and 393,893,351.28 is: 590,508,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,238,618.46 : 728,949,216.34 = 393,893,351.28 : x
  2. Step 2: Convert to fraction form
    486,238,618.46/728,949,216.34 = 393,893,351.28/x
  3. Step 3: Cross multiply
    486,238,618.46x = 728,949,216.34 × 393,893,351.28
  4. Step 4: Simplify right side
    486,238,618.46x = 287,128,249,737,092,320
  5. Step 5: Solve for x
    x = 287,128,249,737,092,320/486,238,618.46
  6. Step 6: Final answer
    x = 590,508,937.05

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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.