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Finding the Fourth Proportional to 660,600.74, 911,624.01 and 358,796.90

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Solution

The fourth proportional to 660,600.74, 911,624.01 and 358,796.90 is: 495,137.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,600.74 : 911,624.01 = 358,796.90 : x
  2. Step 2: Convert to fraction form
    660,600.74/911,624.01 = 358,796.90/x
  3. Step 3: Cross multiply
    660,600.74x = 911,624.01 × 358,796.90
  4. Step 4: Simplify right side
    660,600.74x = 327,087,868,753.57
  5. Step 5: Solve for x
    x = 327,087,868,753.57/660,600.74
  6. Step 6: Final answer
    x = 495,137.00

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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.