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Finding the Fourth Proportional to 660,176.38, 911,048.07 and 358,370.38

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Solution

The fourth proportional to 660,176.38, 911,048.07 and 358,370.38 is: 494,553.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,176.38 : 911,048.07 = 358,370.38 : x
  2. Step 2: Convert to fraction form
    660,176.38/911,048.07 = 358,370.38/x
  3. Step 3: Cross multiply
    660,176.38x = 911,048.07 × 358,370.38
  4. Step 4: Simplify right side
    660,176.38x = 326,492,643,044.17
  5. Step 5: Solve for x
    x = 326,492,643,044.17/660,176.38
  6. Step 6: Final answer
    x = 494,553.66

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1.5x scale

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.