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Finding the Fourth Proportional to 645,657.95, 968,861.17 and 325,834.83

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Solution

The fourth proportional to 645,657.95, 968,861.17 and 325,834.83 is: 488,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,657.95 : 968,861.17 = 325,834.83 : x
  2. Step 2: Convert to fraction form
    645,657.95/968,861.17 = 325,834.83/x
  3. Step 3: Cross multiply
    645,657.95x = 968,861.17 × 325,834.83
  4. Step 4: Simplify right side
    645,657.95x = 315,688,714,620.55
  5. Step 5: Solve for x
    x = 315,688,714,620.55/645,657.95
  6. Step 6: Final answer
    x = 488,941.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.