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Finding the Fourth Proportional to 496,585.17, 685,240.16 and 278,743.95

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Solution

The fourth proportional to 496,585.17, 685,240.16 and 278,743.95 is: 384,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,585.17 : 685,240.16 = 278,743.95 : x
  2. Step 2: Convert to fraction form
    496,585.17/685,240.16 = 278,743.95/x
  3. Step 3: Cross multiply
    496,585.17x = 685,240.16 × 278,743.95
  4. Step 4: Simplify right side
    496,585.17x = 191,006,547,503.31
  5. Step 5: Solve for x
    x = 191,006,547,503.31/496,585.17
  6. Step 6: Final answer
    x = 384,640.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.