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Finding the Fourth Proportional to 660,551.07, 911,555.34 and 358,745.07

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Solution

The fourth proportional to 660,551.07, 911,555.34 and 358,745.07 is: 495,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,551.07 : 911,555.34 = 358,745.07 : x
  2. Step 2: Convert to fraction form
    660,551.07/911,555.34 = 358,745.07/x
  3. Step 3: Cross multiply
    660,551.07x = 911,555.34 × 358,745.07
  4. Step 4: Simplify right side
    660,551.07x = 327,015,984,257.17
  5. Step 5: Solve for x
    x = 327,015,984,257.17/660,551.07
  6. Step 6: Final answer
    x = 495,065.41

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Double scale
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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.