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Finding the Fourth Proportional to 660,950.38, 912,116.99 and 359,144.38

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Solution

The fourth proportional to 660,950.38, 912,116.99 and 359,144.38 is: 495,622.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,950.38 : 912,116.99 = 359,144.38 : x
  2. Step 2: Convert to fraction form
    660,950.38/912,116.99 = 359,144.38/x
  3. Step 3: Cross multiply
    660,950.38x = 912,116.99 × 359,144.38
  4. Step 4: Simplify right side
    660,950.38x = 327,581,684,504.71
  5. Step 5: Solve for x
    x = 327,581,684,504.71/660,950.38
  6. Step 6: Final answer
    x = 495,622.21

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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.