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Finding the Fourth Proportional to 660,596.49, 911,618.15 and 358,792.65

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Solution

The fourth proportional to 660,596.49, 911,618.15 and 358,792.65 is: 495,131.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,596.49 : 911,618.15 = 358,792.65 : x
  2. Step 2: Convert to fraction form
    660,596.49/911,618.15 = 358,792.65/x
  3. Step 3: Cross multiply
    660,596.49x = 911,618.15 × 358,792.65
  4. Step 4: Simplify right side
    660,596.49x = 327,081,890,032.63
  5. Step 5: Solve for x
    x = 327,081,890,032.63/660,596.49
  6. Step 6: Final answer
    x = 495,131.14

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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.