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Finding the Fourth Proportional to 656,512.92, 905,988 and 354,706.92

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Solution

The fourth proportional to 656,512.92, 905,988 and 354,706.92 is: 489,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,512.92 : 905,988 = 354,706.92 : x
  2. Step 2: Convert to fraction form
    656,512.92/905,988 = 354,706.92/x
  3. Step 3: Cross multiply
    656,512.92x = 905,988 × 354,706.92
  4. Step 4: Simplify right side
    656,512.92x = 321,360,213,036.96
  5. Step 5: Solve for x
    x = 321,360,213,036.96/656,512.92
  6. Step 6: Final answer
    x = 489,495.64

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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.