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Finding the Fourth Proportional to 660,574.38, 911,597.31 and 358,768.38

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Solution

The fourth proportional to 660,574.38, 911,597.31 and 358,768.38 is: 495,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,574.38 : 911,597.31 = 358,768.38 : x
  2. Step 2: Convert to fraction form
    660,574.38/911,597.31 = 358,768.38/x
  3. Step 3: Cross multiply
    660,574.38x = 911,597.31 × 358,768.38
  4. Step 4: Simplify right side
    660,574.38x = 327,052,290,121.06
  5. Step 5: Solve for x
    x = 327,052,290,121.06/660,574.38
  6. Step 6: Final answer
    x = 495,102.90

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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.